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The Indo-European languages are a language family native to the overwhelming majority of Europe, the Iranian plateau, and the northern Indian subcontinent. Some European languages of this family, English,
French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
, Portuguese, Russian, Dutch, and Spanish, have expanded through colonialism in the modern period and are now spoken across several continents. The Indo-European family is divided into several branches or sub-families, of which there are eight groups with languages still alive today:
Albanian Albanian may refer to: *Pertaining to Albania in Southeast Europe; in particular: **Albanians, an ethnic group native to the Balkans **Albanian language **Albanian culture **Demographics of Albania, includes other ethnic groups within the country ...
, Armenian, Balto-Slavic,
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
, Germanic, Hellenic, Indo-Iranian, and Italic; and another nine subdivisions that are now
extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
. Today, the individual Indo-European languages with the most native speakers are English, Hindi–Urdu, Spanish,
Bengali Bengali or Bengalee, or Bengalese may refer to: *something of, from, or related to Bengal, a large region in South Asia * Bengalis, an ethnic and linguistic group of the region * Bengali language, the language they speak ** Bengali alphabet, the w ...
, French, Russian, Portuguese,
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...
, and
Punjabi Punjabi, or Panjabi, most often refers to: * Something of, from, or related to Punjab, a region in India and Pakistan * Punjabi language * Punjabi people * Punjabi dialects and languages Punjabi may also refer to: * Punjabi (horse), a British Th ...
, each with over 100 million native speakers; many others are small and in danger of extinction. In total, 46% of the world's population (3.2 billion people) speaks an Indo-European language as a first language — by far the highest of any language family. There are about 445 living Indo-European languages, according to an estimate by ''
Ethnologue ''Ethnologue: Languages of the World'' (stylized as ''Ethnoloɠue'') is an annual reference publication in print and online that provides statistics and other information on the living languages of the world. It is the world's most comprehensiv ...
'', with over two-thirds (313) of them belonging to the Indo-Iranian branch. All Indo-European languages are descended from a single prehistoric language, linguistically reconstructed as Proto-Indo-European, spoken sometime in the Neolithic to Early Bronze Age. The geographical location where it was spoken, the
Proto-Indo-European homeland The Proto-Indo-European homeland (or Indo-European homeland) was the prehistoric linguistic homeland of the Proto-Indo-European language (PIE). From this region, its speakers migrated east and west, and went on to form the proto-communities o ...
, has been the object of many competing hypotheses; the academic consensus supports the Kurgan hypothesis, which posits the homeland to be the Pontic–Caspian steppe in what is now Ukraine and southern Russia, associated with the Yamnaya culture and other related archaeological cultures during the 4th millennium BC to early 3rd millennium BC. By the time the first written records appeared, Indo-European had already evolved into numerous languages spoken across much of Europe, South Asia, and part of Western Asia. Written evidence of Indo-European appeared during the Bronze Age in the form of Mycenaean Greek and the
Anatolian languages The Anatolian languages are an extinct branch of Indo-European languages that were spoken in Anatolia, part of present-day Turkey. The best known Anatolian language is Hittite, which is considered the earliest-attested Indo-European language. ...
of Hittite and Luwian. The oldest records are isolated Hittite words and names — interspersed in texts that are otherwise in the unrelated Akkadian language, a Semitic language — found in texts of the
Assyrian Assyrian may refer to: * Assyrian people, the indigenous ethnic group of Mesopotamia. * Assyria, a major Mesopotamian kingdom and empire. ** Early Assyrian Period ** Old Assyrian Period ** Middle Assyrian Empire ** Neo-Assyrian Empire * Assyrian ...
colony of Kültepe in eastern Anatolia dating to the 20th century BC. Although no older written records of the original Proto-Indo-European population remain, some aspects of their culture and their religion can be reconstructed from later evidence in the daughter cultures. The Indo-European family is significant to the field of historical linguistics as it possesses the second-longest recorded history of any known family, after the Afroasiatic family in the form of the pre-Arab Egyptian language and the Semitic languages. The analysis of the family relationships between the Indo-European languages, and the reconstruction of their common source, was central to the development of the methodology of historical linguistics as an academic discipline in the 19th century. The Indo-European family is not known to be linked to any other language family through any more distant genetic relationship, although several disputed proposals to that effect have been made.


History of Indo-European linguistics

During the 16th century, European visitors to the Indian subcontinent began to notice similarities among Indo-Aryan, Iranian, and
European European, or Europeans, or Europeneans, may refer to: In general * ''European'', an adjective referring to something of, from, or related to Europe ** Ethnic groups in Europe ** Demographics of Europe ** European cuisine, the cuisines of Europe ...
languages. In 1583, English
Jesuit , image = Ihs-logo.svg , image_size = 175px , caption = ChristogramOfficial seal of the Jesuits , abbreviation = SJ , nickname = Jesuits , formation = , founders ...
missionary and Konkani scholar Thomas Stephens wrote a letter from Goa to his brother (not published until the 20th century) in which he noted similarities between Indian languages and Greek and Latin. Another account was made by
Filippo Sassetti Filippo Sassetti (1540–1588) was a traveller and merchant from a long-established Florentine mercantile family, who was born in Florence in 1540. Though his father had sold family interests and he had to commence as a clerk in a merchant busin ...
, a merchant born in Florence in 1540, who travelled to the Indian subcontinent. Writing in 1585, he noted some word similarities between Sanskrit and Italian (these included ''devaḥ''/''dio'' "God", ''sarpaḥ''/''serpe'' "serpent", ''sapta''/''sette'' "seven", ''aṣṭa''/''otto'' "eight", and ''nava''/''nove'' "nine"). However, neither Stephens' nor Sassetti's observations led to further scholarly inquiry. In 1647, Dutch linguist and scholar
Marcus Zuerius van Boxhorn Marcus Zuerius van Boxhorn (August 28, 1612 – October 3, 1653) was a Dutch scholar (his Latinized name was Marcus Zuerius Boxhornius). Born in Bergen op Zoom, he was professor at the University of Leiden. He discovered the similarity among Indo- ...
noted the similarity among certain Asian and European languages and theorized that they were derived from a primitive common language which he called Scythian. He included in his hypothesis Dutch,
Albanian Albanian may refer to: *Pertaining to Albania in Southeast Europe; in particular: **Albanians, an ethnic group native to the Balkans **Albanian language **Albanian culture **Demographics of Albania, includes other ethnic groups within the country ...
, Greek, Latin, Persian, and
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...
, later adding Slavic,
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
, and
Baltic languages The Baltic languages are a branch of the Indo-European language family spoken natively by a population of about 4.5 million people mainly in areas extending east and southeast of the Baltic Sea in Northern Europe. Together with the Slavic lang ...
. However, Van Boxhorn's suggestions did not become widely known and did not stimulate further research. Ottoman Turkish traveler Evliya Çelebi visited Vienna in 1665–1666 as part of a diplomatic mission and noted a few similarities between words in German and in Persian. Gaston Coeurdoux and others made observations of the same type. Coeurdoux made a thorough comparison of Sanskrit, Latin and Greek conjugations in the late 1760s to suggest a relationship among them. Meanwhile,
Mikhail Lomonosov Mikhail Vasilyevich Lomonosov (; russian: Михаил (Михайло) Васильевич Ломоносов, p=mʲɪxɐˈil vɐˈsʲilʲjɪvʲɪtɕ , a=Ru-Mikhail Vasilyevich Lomonosov.ogg; – ) was a Russian Empire, Russian polymath, s ...
compared different language groups, including Slavic, Baltic (" Kurlandic"), Iranian (" Medic"), Finnish,
Chinese Chinese can refer to: * Something related to China * Chinese people, people of Chinese nationality, citizenship, and/or ethnicity **''Zhonghua minzu'', the supra-ethnic concept of the Chinese nation ** List of ethnic groups in China, people of va ...
, "Hottentot" ( Khoekhoe), and others, noting that related languages (including Latin, Greek, German and Russian) must have separated in antiquity from common ancestors.M.V. Lomonosov (drafts for ''Russian Grammar'', published 1755). In: Complete Edition, Moscow, 1952, vol. 7, pp. 652–59
: Представимъ долготу времени, которою сіи языки раздѣлились. ... Польской и россійской языкъ коль давно раздѣлились! Подумай же, когда курляндской! Подумай же, когда латинской, греч., нѣм., росс. О глубокая древность! magine the depth of time when these languages separated! ... Polish and Russian separated so long ago! Now think how long ago [this happened toKurlandic! Think when [this happened to] Latin, Greek, German, and Russian! Oh, great antiquity!]
The hypothesis reappeared in 1786 when William Jones (philologist), Sir William Jones first lectured on the striking similarities among three of the oldest languages known in his time: Latin, Greek, and Sanskrit, to which he tentatively added
Gothic Gothic or Gothics may refer to: People and languages *Goths or Gothic people, the ethnonym of a group of East Germanic tribes **Gothic language, an extinct East Germanic language spoken by the Goths **Crimean Gothic, the Gothic language spoken b ...
,
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
, and Persian, though his classification contained some inaccuracies and omissions. In one of the most famous quotations in linguistics, Jones made the following prescient statement in a lecture to the
Asiatic Society of Bengal The Asiatic Society is a government of India organisation founded during the Company rule in India to enhance and further the cause of "Oriental research", in this case, research into India and the surrounding regions. It was founded by the p ...
in 1786, conjecturing the existence of an earlier ancestor language, which he called "a common source" but did not name: Thomas Young first used the term ''Indo-European'' in 1813, deriving it from the geographical extremes of the language family: from Western Europe to North India. A synonym is Indo-Germanic (''Idg.'' or ''IdG.''), specifying the family's southeasternmost and northwesternmost branches. This first appeared in French (''indo-germanique'') in 1810 in the work of Conrad Malte-Brun; in most languages this term is now dated or less common than ''Indo-European'', although in German ''indogermanisch'' remains the standard scientific term. A number of other synonymous terms have also been used. Franz Bopp wrote in 1816 ''On the conjugational system of the Sanskrit language compared with that of Greek, Latin, Persian and Germanic'' and between 1833 and 1852 he wrote ''Comparative Grammar''. This marks the beginning of Indo-European studies as an academic discipline. The classical phase of Indo-European
comparative linguistics Comparative linguistics, or comparative-historical linguistics (formerly comparative philology) is a branch of historical linguistics that is concerned with comparing languages to establish their historical relatedness. Genetic relatedness ...
leads from this work to August Schleicher's 1861 ''Compendium'' and up to Karl Brugmann's '' Grundriss'', published in the 1880s. Brugmann's
neogrammarian The Neogrammarians (German: ''Junggrammatiker'', 'young grammarians') were a German school of linguists, originally at the University of Leipzig, in the late 19th century who proposed the Neogrammarian hypothesis of the regularity of sound change ...
reevaluation of the field and
Ferdinand de Saussure Ferdinand de Saussure (; ; 26 November 1857 – 22 February 1913) was a Swiss linguist, semiotician and philosopher. His ideas laid a foundation for many significant developments in both linguistics and semiotics in the 20th century. He is widel ...
's development of the laryngeal theory may be considered the beginning of "modern" Indo-European studies. The generation of Indo-Europeanists active in the last third of the 20th century (such as Calvert Watkins, Jochem Schindler, and Helmut Rix) developed a better understanding of morphology and of ablaut in the wake of Kuryłowicz's 1956 ''Apophony in Indo-European,'' who in 1927 pointed out the existence of the Hittite consonant ḫ. Kuryłowicz's discovery supported Ferdinand de Saussure's 1879 proposal of the existence of ''coefficients sonantiques'', elements de Saussure reconstructed to account for vowel length alternations in Indo-European languages. This led to the so-called laryngeal theory, a major step forward in Indo-European linguistics and a confirmation of de Saussure's theory.


Classification

The various subgroups of the Indo-European language family include ten major branches, listed below in alphabetical order: *
Albanian Albanian may refer to: *Pertaining to Albania in Southeast Europe; in particular: **Albanians, an ethnic group native to the Balkans **Albanian language **Albanian culture **Demographics of Albania, includes other ethnic groups within the country ...
, attested from the 13th century AD; Proto-Albanian evolved from an ancient
Paleo-Balkan language The Paleo-Balkan languages or Palaeo-Balkan languages is a grouping of various extinct Indo-European languages that were spoken in the Balkans and surrounding areas in ancient times. Paleo-Balkan studies are obscured by the scarce attestation of ...
, traditionally thought to be Illyrian, or otherwise a totally unattested Balkan
Indo-European language The Indo-European languages are a language family native to the overwhelming majority of Europe, the Iranian plateau, and the northern Indian subcontinent. Some European languages of this family, English, French, Portuguese, Russian, Dutch ...
that was closely related to Illyrian and
Messapic Messapic (; also known as Messapian; or as Iapygian) is an extinct Indo-European language of the southeastern Italian Peninsula, once spoken in Apulia by the Iapygian peoples of the region: the ''Calabri'' and ''Salentini'' (known collectively as ...
. *
Anatolian Anatolian or anatolica may refer to: * Anything of, from, or related to the region Anatolia * Anatolians, ancient Indo-European peoples who spoke the Anatolian languages * Anatolian High School, a type of Turkish educational institution * Anatol ...
, extinct by Late Antiquity, spoken in Anatolia, attested in isolated terms in Luwian/ Hittite mentioned in
Semitic Semitic most commonly refers to the Semitic languages, a name used since the 1770s to refer to the language family currently present in West Asia, North and East Africa, and Malta. Semitic may also refer to: Religions * Abrahamic religions ** ...
Old Assyrian texts from the 20th and 19th centuries BC, Hittite texts from about 1650 BC. * Armenian, attested from the early 5th century AD. * Balto-Slavic, believed by most Indo-Europeanists to form a phylogenetic unit, while a minority ascribes similarities to prolonged language-contact. ** Slavic (from Proto-Slavic), attested from the 9th century AD ( possibly earlier), earliest texts in
Old Church Slavonic Old Church Slavonic or Old Slavonic () was the first Slavic languages, Slavic literary language. Historians credit the 9th-century Byzantine Empire, Byzantine missionaries Saints Cyril and Methodius with Standard language, standardizing the lan ...
. Slavic languages include
Bulgarian Bulgarian may refer to: * Something of, from, or related to the country of Bulgaria * Bulgarians, a South Slavic ethnic group * Bulgarian language, a Slavic language * Bulgarian alphabet * A citizen of Bulgaria, see Demographics of Bulgaria * Bul ...
, Russian,
Polish Polish may refer to: * Anything from or related to Poland, a country in Europe * Polish language * Poles, people from Poland or of Polish descent * Polish chicken *Polish brothers (Mark Polish and Michael Polish, born 1970), American twin screenwr ...
, Czech, Slovak, Silesian,
Kashubian Kashubian can refer to: * Pertaining to Kashubia, a region of north-central Poland * Kashubians, an ethnic group of north-central Poland * Kashubian language See also *Kashubian alphabet The Kashubian or Cassubian alphabet (''kaszëbsczi alf ...
,
Macedonian Macedonian most often refers to someone or something from or related to Macedonia. Macedonian(s) may specifically refer to: People Modern * Macedonians (ethnic group), a nation and a South Slavic ethnic group primarily associated with North M ...
, Serbo-Croatian ( Bosnian, Croatian, Montenegrin,
Serbian Serbian may refer to: * someone or something related to Serbia, a country in Southeastern Europe * someone or something related to the Serbs, a South Slavic people * Serbian language * Serbian names See also

* * * Old Serbian (disambiguat ...
), Sorbian,
Slovenian Slovene or Slovenian may refer to: * Something of, from, or related to Slovenia, a country in Central Europe * Slovene language, a South Slavic language mainly spoken in Slovenia * Slovenes The Slovenes, also known as Slovenians ( sl, Sloven ...
,
Ukrainian Ukrainian may refer to: * Something of, from, or related to Ukraine * Something relating to Ukrainians, an East Slavic people from Eastern Europe * Something relating to demographics of Ukraine in terms of demography and population of Ukraine * So ...
,
Belarusian Belarusian may refer to: * Something of, or related to Belarus * Belarusians, people from Belarus, or of Belarusian descent * A citizen of Belarus, see Demographics of Belarus * Belarusian language * Belarusian culture * Belarusian cuisine * Byelor ...
, and
Rusyn Rusyn may refer to: * Rusyns, Rusyn people, an East Slavic people ** Pannonian Rusyns, Pannonian Rusyn people, a branch of Rusyn people ** Lemkos, a branch of Rusyn (or Ukrainian) people ** Boykos, a branch of Rusyn (or Ukrainian) people * Rusyn l ...
. **
Baltic Baltic may refer to: Peoples and languages * Baltic languages, a subfamily of Indo-European languages, including Lithuanian, Latvian and extinct Old Prussian *Balts (or Baltic peoples), ethnic groups speaking the Baltic languages and/or originati ...
, attested from the 14th century AD; although attested relatively recently, they retain many archaic features attributed to Proto-Indo-European (PIE). Living examples are
Lithuanian Lithuanian may refer to: * Lithuanians * Lithuanian language * The country of Lithuania * Grand Duchy of Lithuania * Culture of Lithuania * Lithuanian cuisine * Lithuanian Jews as often called "Lithuanians" (''Lita'im'' or ''Litvaks'') by other Jew ...
and Latvian. *
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
(from Proto-Celtic), attested since the 6th century BC;
Lepontic Lepontic is an ancient Alps, Alpine Celtic languageJohn T. Koch (ed.) ''Celtic culture: a historical encyclopedia'' ABC-CLIO (2005) that was spoken in parts of Rhaetia and Cisalpine Gaul (now Northern Italy) between 550 and 100 BC. Lepontic i ...
inscriptions date as early as the 6th century BC; Celtiberian from the 2nd century BC; Primitive Irish Ogham inscriptions from the 4th or 5th century AD, earliest inscriptions in
Old Welsh Old Welsh ( cy, Hen Gymraeg) is the stage of the Welsh language from about 800 AD until the early 12th century when it developed into Middle Welsh.Koch, p. 1757. The preceding period, from the time Welsh became distinct from Common Brittonic ...
from the 7th century AD. Modern Celtic languages include
Welsh Welsh may refer to: Related to Wales * Welsh, referring or related to Wales * Welsh language, a Brittonic Celtic language spoken in Wales * Welsh people People * Welsh (surname) * Sometimes used as a synonym for the ancient Britons (Celtic peop ...
, Cornish,
Breton Breton most often refers to: *anything associated with Brittany, and generally ** Breton people ** Breton language, a Southwestern Brittonic Celtic language of the Indo-European language family, spoken in Brittany ** Breton (horse), a breed **Ga ...
, Scottish Gaelic, Irish and
Manx Manx (; formerly sometimes spelled Manks) is an adjective (and derived noun) describing things or people related to the Isle of Man: * Manx people **Manx surnames * Isle of Man It may also refer to: Languages * Manx language, also known as Manx ...
. * Germanic (from Proto-Germanic), earliest attestations in runic inscriptions from around the 2nd century AD, earliest coherent texts in
Gothic Gothic or Gothics may refer to: People and languages *Goths or Gothic people, the ethnonym of a group of East Germanic tribes **Gothic language, an extinct East Germanic language spoken by the Goths **Crimean Gothic, the Gothic language spoken b ...
, 4th century AD.
Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlement of Britain, Anglo ...
manuscript tradition from about the 8th century AD. Includes English, Frisian,
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...
, Dutch, Scots,
Danish Danish may refer to: * Something of, from, or related to the country of Denmark People * A national or citizen of Denmark, also called a "Dane," see Demographics of Denmark * Culture of Denmark * Danish people or Danes, people with a Danish ance ...
,
Swedish Swedish or ' may refer to: Anything from or related to Sweden, a country in Northern Europe. Or, specifically: * Swedish language, a North Germanic language spoken primarily in Sweden and Finland ** Swedish alphabet, the official alphabet used by ...
, Norwegian, Afrikaans,
Yiddish Yiddish (, or , ''yidish'' or ''idish'', , ; , ''Yidish-Taytsh'', ) is a West Germanic language historically spoken by Ashkenazi Jews. It originated during the 9th century in Central Europe, providing the nascent Ashkenazi community with a ver ...
,
Low German : : : : : (70,000) (30,000) (8,000) , familycolor = Indo-European , fam2 = Germanic , fam3 = West Germanic , fam4 = North Sea Germanic , ancestor = Old Saxon , ancestor2 = Middle L ...
, Icelandic, Elfdalian, and Faroese. * Hellenic (from Proto-Greek, see also History of Greek); fragmentary records in Mycenaean Greek from between 1450 and 1350 BC have been found. Homeric texts date to the 8th century BC. * Indo-Iranian, attested circa 1400 BC, descended from
Proto-Indo-Iranian Proto-Indo-Iranian, also Proto-Indo-Iranic is the reconstructed proto-language of the Indo-Iranian/Indo-Iranic branch of Indo-European. Its speakers, the hypothetical Proto-Indo-Iranians, are assumed to have lived in the late 3rd millennium B ...
(dated to the late 3rd millennium BC). ** Indo-Aryan, attested from around 1400 BC in Hittite texts from Anatolia, showing traces of Indo-Aryan words. Epigraphically from the 3rd century BC in the form of Prakrit ( Edicts of Ashoka). The Rigveda is assumed to preserve intact records via oral tradition dating from about the mid-
second millennium BC The 2nd millennium BC spanned the years 2000 BC to 1001 BC. In the Ancient Near East, it marks the transition from the Middle to the Late Bronze Age. The Ancient Near Eastern cultures are well within the historical era: The first half of the mil ...
in the form of Vedic Sanskrit. Includes a wide range of modern languages from Northern India, Eastern Pakistan and Bangladesh, including
Hindustani Hindustani may refer to: * something of, from, or related to Hindustan (another name of India) * Hindustani language, an Indo-Aryan language, whose two official norms are Hindi and Urdu * Fiji Hindi, a variety of Eastern Hindi spoken in Fiji, and ...
( Hindi, Urdu),
Bengali Bengali or Bengalee, or Bengalese may refer to: *something of, from, or related to Bengal, a large region in South Asia * Bengalis, an ethnic and linguistic group of the region * Bengali language, the language they speak ** Bengali alphabet, the w ...
,
Odia Odia, also spelled Oriya or Odiya, may refer to: * Odia people in Odisha, India * Odia language, an Indian language, belonging to the Indo-Aryan branch of the Indo-European language family * Odia alphabet, a writing system used for the Odia languag ...
,
Assamese Assamese may refer to: * Assamese people, a socio-ethnolinguistic identity of north-eastern India * People of Assam, multi-ethnic, multi-linguistic and multi-religious people of Assam * Assamese language, one of the easternmost Indo-Aryan language ...
,
Punjabi Punjabi, or Panjabi, most often refers to: * Something of, from, or related to Punjab, a region in India and Pakistan * Punjabi language * Punjabi people * Punjabi dialects and languages Punjabi may also refer to: * Punjabi (horse), a British Th ...
,
Kashmiri Kashmiri may refer to: * People or things related to the Kashmir Valley or the broader region of Kashmir * Kashmiris, an ethnic group native to the Kashmir Valley * Kashmiri language, their language People with the name * Kashmiri Saikia Baruah ...
,
Gujarati Gujarati may refer to: * something of, from, or related to Gujarat, a state of India * Gujarati people, the major ethnic group of Gujarat * Gujarati language, the Indo-Aryan language spoken by them * Gujarati languages, the Western Indo-Aryan sub- ...
,
Marathi Marathi may refer to: *Marathi people, an Indo-Aryan ethnolinguistic group of Maharashtra, India *Marathi language, the Indo-Aryan language spoken by the Marathi people *Palaiosouda, also known as Marathi, a small island in Greece See also * * ...
, Sindhi and
Nepali Nepali or Nepalese may refer to : Concerning Nepal * Anything of, from, or related to Nepal * Nepali people, citizens of Nepal * Nepali language, an Indo-Aryan language found in Nepal, the current official national language and a language spoken ...
, as well as Sinhala of
Sri Lanka Sri Lanka (, ; si, ශ්‍රී ලංකා, Śrī Laṅkā, translit-std=ISO (); ta, இலங்கை, Ilaṅkai, translit-std=ISO ()), formerly known as Ceylon and officially the Democratic Socialist Republic of Sri Lanka, is an ...
and
Dhivehi Dhivehi, also spelled Divehi, may refer to: *Dhivehi people, an ethnic group native to the historic region of the Maldive Islands. *Dhivehi language, an Indo-Aryan language predominantly spoken by about 350,000 people in the Republic of Maldives ...
of the Maldives and
Minicoy Minicoy, locally known as Maliku (), is an island in Lakshadweep, India. Along with Viringili, it is on ''Maliku atoll'', the southernmost atoll of Lakshadweep archipelago. Administratively, it is a census town in the Indian union territory of ...
. ** Iranian or Iranic, attested from roughly 1000 BC in the form of
Avestan Avestan (), or historically Zend, is an umbrella term for two Old Iranian languages: Old Avestan (spoken in the 2nd millennium BCE) and Younger Avestan (spoken in the 1st millennium BCE). They are known only from their conjoined use as the scrip ...
. Epigraphically from 520 BC in the form of
Old Persian Old Persian is one of the two directly attested Old Iranian languages (the other being Avestan language, Avestan) and is the ancestor of Middle Persian (the language of Sasanian Empire). Like other Old Iranian languages, it was known to its native ...
( Behistun inscription). Includes Persian, Pashto, Kurdish
Balochi Balochi, sometimes spelt in various other ways, may refer to: * Balochi language, a language of Iran, Pakistan and Afghanistan * an adjective for something related to the Baloch people, an ethnic group of Iran, Pakistan and Afghanistan * an adjecti ...
,
Luri Luri may refer to: * Luri people or Lurs, an Iranian people * Luri language, Western Iranian language continuum spoken by the Lurs * Luri language (Nigeria), dialect of the Afro-Asiatic language Polci * Luri, Haute-Corse, commune in France * Luri ...
, and Ossetian. ** Nuristani (includes Kamkata-vari,
Vasi-vari Wasi-wari (Vasi-vari, Wasi-weri) is the language of the Wasi people, spoken in a few villages in the Pârun Valley (Prasun Valley) in Afghanistan. It also goes by the name Prasun or Paruni. Vasi-vari belongs to the Indo-European language famil ...
, Askunu,
Waigali Waigali (') is a language spoken by about 10,000 Nuristani people of the Waigal Valley in Afghanistan's Nuristan Province. The native name is ''Kalaṣa-alâ'' 'Kalasha-language'. "Waigali" refers to the dialect of the Väy people of the upp ...
, Tregami, and Zemiaki). * Italic (from Proto-Italic), attested from the 7th century BC. Includes the ancient Osco-Umbrian languages, Faliscan, as well as Latin and its descendants, the Romance languages, such as Italian,
Venetian Venetian often means from or related to: * Venice, a city in Italy * Veneto, a region of Italy * Republic of Venice (697–1797), a historical nation in that area Venetian and the like may also refer to: * Venetian language, a Romance language s ...
, Galician, Sardinian,
Neapolitan Neapolitan means of or pertaining to Naples, a city in Italy; or to: Geography and history * Province of Naples, a province in the Campania region of southern Italy that includes the city * Duchy of Naples, in existence during the Early and Hig ...
, Sicilian, Spanish, Asturleonese,
French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
, Romansh,
Occitan Occitan may refer to: * Something of, from, or related to the Occitania territory in parts of France, Italy, Monaco and Spain. * Something of, from, or related to the Occitania administrative region of France. * Occitan language Occitan (; o ...
, Portuguese,
Romanian Romanian may refer to: *anything of, from, or related to the country and nation of Romania **Romanians, an ethnic group **Romanian language, a Romance language ***Romanian dialects, variants of the Romanian language **Romanian cuisine, traditional ...
, and
Catalan Catalan may refer to: Catalonia From, or related to Catalonia: * Catalan language, a Romance language * Catalans, an ethnic group formed by the people from, or with origins in, Northern or southern Catalonia Places * 13178 Catalan, asteroid #1 ...
. * Tocharian, with proposed links to the Afanasevo culture of Southern Siberia. Extant in two dialects (Turfanian and Kuchean, or Tocharian A and B), attested from roughly the 6th to the 9th century AD. Marginalized by the Old Turkic Uyghur Khaganate and probably extinct by the 10th century. In addition to the classical ten branches listed above, several extinct and little-known languages and language-groups have existed or are proposed to have existed: *
Ancient Belgian Ancient Belgian is a hypothetical extinct Indo-European language, spoken in Belgica (northern Gaul) in late prehistory. It is often identified with the hypothetical Nordwestblock. While it remains a matter of controversy, the linguist Maurits G ...
: hypothetical language associated with the proposed Nordwestblock cultural area. Speculated to be connected to Italic or Venetic, and to have certain phonological features in common with Lusitanian. * Cimmerian: possibly Iranic, Thracian, or Celtic * Dacian: possibly very close to Thracian *
Elymian The Elymians ( grc-gre, Ἔλυμοι, ''Élymoi''; Latin: ''Elymi'') were an ancient tribal people who inhabited the western part of Sicily during the Bronze Age and Classical antiquity. Origins According to Hellanicus of Lesbos, the Elymians ...
: Poorly-attested language spoken by the Elymians, one of the three indigenous (i.e. pre-Greek and pre-Punic) tribes of Sicily. Indo-European affiliation widely accepted, possibly related to Italic or Anatolian.] * Illyrian: possibly related to Albanian, Messapian, or both * Liburnian language, Liburnian: evidence too scant and uncertain to determine anything with certainty * Ligurian: possibly close to or part of Celtic. * Lusitanian: possibly related to (or part of) Celtic, Ligurian, or Italic * Ancient Macedonian: proposed relationship to Greek. * Messapian: not conclusively deciphered * Paionian: extinct language once spoken north of Macedon * Phrygian: language of the ancient
Phrygians The Phrygians (Greek: Φρύγες, ''Phruges'' or ''Phryges'') were an ancient Indo-European speaking people, who inhabited central-western Anatolia (modern-day Turkey) in antiquity. They were related to the Greeks. Ancient Greek authors used ...
. Very likely, but not certainly, a sister group to Hellenic. * Sicel: an ancient language spoken by the Sicels (Greek Sikeloi, Latin Siculi), one of the three indigenous (i.e. pre-Greek and pre-Punic) tribes of Sicily. Proposed relationship to Latin or proto-Illyrian (Pre-Indo-European) at an earlier stage. * Sorothaptic: proposed, pre-Celtic, Iberian language * Thracian: possibly including Dacian *
Venetic Venetic is an extinct Indo-European language, usually classified into the Italic subgroup, that was spoken by the Veneti people in ancient times in northeast Italy (Veneto and Friuli) and part of modern Slovenia, between the Po Delta and ...
: shares several similarities with Latin and the Italic languages, but also has some affinities with other IE languages, especially Germanic and Celtic. Membership of languages in the Indo-European language family is determined by
genealogical Genealogy () is the study of families, family history, and the tracing of their lineages. Genealogists use oral interviews, historical records, genetic analysis, and other records to obtain information about a family and to demonstrate kinsh ...
relationships, meaning that all members are presumed descendants of a common ancestor, Proto-Indo-European. Membership in the various branches, groups and subgroups of Indo-European is also genealogical, but here the defining factors are ''shared innovations'' among various languages, suggesting a common ancestor that split off from other Indo-European groups. For example, what makes the Germanic languages a branch of Indo-European is that much of their structure and phonology can be stated in rules that apply to all of them. Many of their common features are presumed innovations that took place in Proto-Germanic, the source of all the Germanic languages. In the 21st century, several attempts have been made to model the phylogeny of Indo-European languages using Bayesian methodologies similar to those applied to problems in biological phylogeny. Although there are differences in absolute timing between the various analyses, there is much commonality between them, including the result that the first known language groups to diverge were the Anatolian and Tocharian language families, in that order.


Tree versus wave model

The " tree model" is considered an appropriate representation of the genealogical history of a language family if communities do not remain in contact after their languages have started to diverge. In this case, subgroups defined by shared innovations form a nested pattern. The tree model is not appropriate in cases where languages remain in contact as they diversify; in such cases subgroups may overlap, and the " wave model" is a more accurate representation. Most approaches to Indo-European subgrouping to date have assumed that the tree model is by-and-large valid for Indo-European; however, there is also a long tradition of wave-model approaches. In addition to genealogical changes, many of the early changes in Indo-European languages can be attributed to
language contact Language contact occurs when speakers of two or more languages or varieties interact and influence each other. The study of language contact is called contact linguistics. When speakers of different languages interact closely, it is typical for th ...
. It has been asserted, for example, that many of the more striking features shared by Italic languages (Latin, Oscan, Umbrian, etc.) might well be
areal features In geolinguistics, areal features are elements shared by languages or dialects in a geographic area, particularly when such features are not descended from a proto-language, or, common ancestor language. That is, an areal feature is contrasted to ...
. More certainly, very similar-looking alterations in the systems of
long vowel In linguistics, vowel length is the perceived length of a vowel sound: the corresponding physical measurement is duration. In some languages vowel length is an important phonemic factor, meaning vowel length can change the meaning of the word, f ...
s in the West Germanic languages greatly postdate any possible notion of a proto-language innovation (and cannot readily be regarded as "areal", either, because English and continental West Germanic were not a linguistic area). In a similar vein, there are many similar innovations in Germanic and Balto-Slavic that are far more likely areal features than traceable to a common proto-language, such as the uniform development of a
high vowel A close vowel, also known as a high vowel (in U.S. terminology), is any in a class of vowel sounds used in many spoken languages. The defining characteristic of a close vowel is that the tongue is positioned as close as possible to the roof of th ...
(*''u'' in the case of Germanic, *''i/u'' in the case of Baltic and Slavic) before the PIE syllabic resonants *''ṛ, *ḷ, *ṃ, *ṇ'', unique to these two groups among IE languages, which is in agreement with the wave model. The Balkan sprachbund even features areal convergence among members of very different branches. An extension to the '' Ringe- Warnow model of language evolution'', suggests that early IE had featured limited contact between distinct lineages, with only the Germanic subfamily exhibiting a less treelike behaviour as it acquired some characteristics from neighbours early in its evolution. The internal diversification of especially West Germanic is cited to have been radically non-treelike.


Proposed subgroupings

Specialists have postulated the existence of higher-order subgroups such as Italo-Celtic, Graeco-Armenian, Graeco-Aryan or Graeco-Armeno-Aryan, and Balto-Slavo-Germanic. However, unlike the ten traditional branches, these are all controversial to a greater or lesser degree. The Italo-Celtic subgroup was at one point uncontroversial, considered by
Antoine Meillet Paul Jules Antoine Meillet (; 11 November 1866 Moulins, France – 21 September 1936 Châteaumeillant, France) was one of the most important French linguists of the early 20th century. He began his studies at the Sorbonne University, where he was ...
to be even better established than Balto-Slavic. The main lines of evidence included the genitive suffix ''-ī''; the superlative suffix ''-m̥mo''; the change of /p/ to /kʷ/ before another /kʷ/ in the same word (as in ''penkʷe'' > ''*kʷenkʷe'' > Latin ''quīnque'', Old Irish ''cóic''); and the subjunctive morpheme ''-ā-''. This evidence was prominently challenged by Calvert Watkins, while Michael Weiss has argued for the subgroup. Evidence for a relationship between Greek and Armenian includes the regular change of the second laryngeal to ''a'' at the beginnings of words, as well as terms for "woman" and "sheep". Greek and Indo-Iranian share innovations mainly in verbal morphology and patterns of nominal derivation. Relations have also been proposed between Phrygian and Greek, and between Thracian and Armenian. Some fundamental shared features, like the
aorist Aorist (; abbreviated ) verb forms usually express perfective aspect and refer to past events, similar to a preterite. Ancient Greek grammar had the aorist form, and the grammars of other Indo-European languages and languages influenced by the I ...
(a verb form denoting action without reference to duration or completion) having the perfect active particle -s fixed to the stem, link this group closer to Anatolian languages and Tocharian. Shared features with Balto-Slavic languages, on the other hand (especially present and preterit formations), might be due to later contacts. The
Indo-Hittite In Indo-European linguistics, the term Indo-Hittite (also Indo-Anatolian) refers to Edgar Howard Sturtevant's 1926 hypothesis that the Anatolian languages may have split off a Pre-Proto-Indo-European language considerably earlier than the separati ...
hypothesis proposes that the Indo-European language family consists of two main branches: one represented by the Anatolian languages and another branch encompassing all other Indo-European languages. Features that separate Anatolian from all other branches of Indo-European (such as the gender or the verb system) have been interpreted alternately as archaic debris or as innovations due to prolonged isolation. Points proffered in favour of the Indo-Hittite hypothesis are the (non-universal) Indo-European agricultural terminology in Anatolia and the preservation of laryngeals. However, in general this hypothesis is considered to attribute too much weight to the Anatolian evidence. According to another view, the Anatolian subgroup left the Indo-European parent language comparatively late, approximately at the same time as Indo-Iranian and later than the Greek or Armenian divisions. A third view, especially prevalent in the so-called French school of Indo-European studies, holds that extant similarities in non- satem languages in general—including Anatolian—might be due to their peripheral location in the Indo-European language-area and to early separation, rather than indicating a special ancestral relationship. Hans J. Holm, based on lexical calculations, arrives at a picture roughly replicating the general scholarly opinion and refuting the Indo-Hittite hypothesis.


Satem and centum languages

The division of the Indo-European languages into satem and centum groups was put forward by Peter von Bradke in 1890, although Karl Brugmann did propose a similar type of division in 1886. In the satem languages, which include the Balto-Slavic and Indo-Iranian branches, as well as (in most respects) Albanian and Armenian, the reconstructed Proto-Indo-European palatovelars remained distinct and were fricativized, while the labiovelars merged with the 'plain velars'. In the centum languages, the palatovelars merged with the plain velars, while the labiovelars remained distinct. The results of these alternative developments are exemplified by the words for "hundred" in Avestan (''satem'') and Latin (''centum'')—the initial palatovelar developed into a fricative in the former, but became an ordinary velar in the latter. Rather than being a genealogical separation, the centum–satem division is commonly seen as resulting from innovative changes that spread across PIE dialect-branches over a particular geographical area; the centum–satem
isogloss An isogloss, also called a heterogloss (see Etymology below), is the geographic boundary of a certain linguistic feature, such as the pronunciation of a vowel, the meaning of a word, or the use of some morphological or syntactic feature. Major d ...
intersects a number of other isoglosses that mark distinctions between features in the early IE branches. It may be that the centum branches in fact reflect the original state of affairs in PIE, and only the satem branches shared a set of innovations, which affected all but the peripheral areas of the PIE dialect continuum. Kortlandt proposes that the ancestors of Balts and Slavs took part in satemization before being drawn later into the western Indo-European sphere.


Proposed external relations

From the very beginning of Indo-European studies, there have been attempts to link the Indo-European languages genealogically to other languages and language families. However, these theories remain highly controversial, and most specialists in Indo-European linguistics are sceptical or agnostic about such proposals. Proposals linking the Indo-European languages with a single language family include: *
Indo-Uralic Indo-Uralic is a controversial hypothetical language family consisting of Indo-European languages, Indo-European and Uralic languages, Uralic. The suggestion of a genetic relationship (linguistics), genetic relationship between Indo-European a ...
, joining Indo-European with
Uralic The Uralic languages (; sometimes called Uralian languages ) form a language family of 38 languages spoken by approximately 25million people, predominantly in Northern Eurasia. The Uralic languages with the most native speakers are Hungarian (w ...
*
Pontic Pontic, from the Greek ''pontos'' (, ), or "sea", may refer to: The Black Sea Places * The Pontic colonies, on its northern shores * Pontus (region), a region on its southern shores * The Pontic–Caspian steppe, steppelands stretching from n ...
, postulated by John Colarusso, which joins Indo-European with
Northwest Caucasian The Northwest Caucasian languages, also called West Caucasian, Abkhazo-Adyghean, Abkhazo-Circassian, Circassic, or sometimes ''Pontic languages'' (from the historical region of Pontus, in contrast to ''Caspian languages'' for the Northeast Cauc ...
Other proposed families include: * Nostratic, comprising all or some of the Eurasiatic languages and the
Kartvelian Kartvelian may refer to: * Anything coming from or related to Georgia (country) * Kartvelian languages * Kartvelian alphabet, see Georgian alphabet * Kartvelian studies * Georgians {{disambig Language and nationality disambiguation pages ...
, Dravidian (or wider,
Elamo-Dravidian The Elamo-Dravidian language family is a hypothesised language family that links the Dravidian languages of Pakistan, and Southern India to the extinct Elamite language of ancient Elam (present-day southwestern Iran). Linguist David McAlpin has ...
) and Afroasiatic language families * Eurasiatic, a theory championed by Joseph Greenberg, comprising the
Uralic The Uralic languages (; sometimes called Uralian languages ) form a language family of 38 languages spoken by approximately 25million people, predominantly in Northern Eurasia. The Uralic languages with the most native speakers are Hungarian (w ...
, Altaic and various ' Paleosiberian' families (
Ainu Ainu or Aynu may refer to: *Ainu people, an East Asian ethnic group of Japan and the Russian Far East *Ainu languages, a family of languages **Ainu language of Hokkaido **Kuril Ainu language, extinct language of the Kuril Islands **Sakhalin Ainu la ...
, Yukaghir,
Nivkh Nivkh or Amuric or Gilyak may refer to: * Nivkh people The Nivkh, or Gilyak (also Nivkhs or Nivkhi, or Gilyaks; ethnonym: Нивхгу, ''Nʼivxgu'' (Amur) or Ниғвңгун, ''Nʼiɣvŋgun'' (E. Sakhalin) "the people"), are an indigenous et ...
,
Chukotko-Kamchatkan The Chukotko-Kamchatkan or Chukchi–Kamchatkan languages are a language family of extreme northeastern Siberia. Its speakers traditionally were indigenous hunter-gatherers and reindeer-herders. Chukotko-Kamchatkan is endangered. The Kamchatkan ...
, Eskimo–Aleut) and possibly others Nostratic and Eurasiatic, in turn, have been included in even wider groupings, such as Borean, a language family separately proposed by
Harold C. Fleming Harold Crane Fleming (December 23, 1922 – April 29, 2015) was an anthropologist and historical linguist specializing in the cultures and languages of the Horn of Africa. As an adherent of the Four Field School of American anthropology, he ...
and Sergei Starostin that encompasses almost all of the world's natural languages with the exception of those native to
sub-Saharan Africa Sub-Saharan Africa is, geographically, the area and regions of the continent of Africa that lies south of the Sahara. These include West Africa, East Africa, Central Africa, and Southern Africa. Geopolitically, in addition to the List of sov ...
, New Guinea,
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
, and the
Andaman Islands The Andaman Islands () are an archipelago in the northeastern Indian Ocean about southwest off the coasts of Myanmar's Ayeyarwady Region. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between th ...
. Objections to such groupings are not based on any theoretical claim about the likely historical existence or nonexistence of such
macrofamilies In historical linguistics, a macrofamily, also called a superfamily or phylum, is a proposed genetic relationship grouping together language families (also Language isolate, isolates) in a larger scale classification.Lyle Campbell, Campbell, Lyle a ...
; it is entirely reasonable to suppose that they might have existed. The serious difficulty lies in identifying the details of actual relationships between language families, because it is very hard to find concrete evidence that transcends chance resemblance or is not equally likely explained as being due to borrowing, including ''
Wanderwörter A (, 'migrant word', plural ; capitalized like all German nouns) is a word that has spread as a loanword among numerous languages and cultures, especially those that are far away from one another, usually in connection with trade. As such, are ...
'', which can travel very long distances. Because the
signal-to-noise ratio Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power, often expressed in deci ...
in historical linguistics declines over time, at great enough time-depths it becomes open to reasonable doubt that one can even distinguish between signal and noise.


Evolution


Proto-Indo-European

The proposed Proto-Indo-European language (PIE) is the reconstructed common ancestor of the Indo-European languages, spoken by the Proto-Indo-Europeans. From the 1960s, knowledge of Anatolian became certain enough to establish its relationship to PIE. Using the method of internal reconstruction, an earlier stage, called Pre-Proto-Indo-European, has been proposed. PIE was an inflected language, in which the grammatical relationships between words were signaled through inflectional morphemes (usually endings). The
roots A root is the part of a plant, generally underground, that anchors the plant body, and absorbs and stores water and nutrients. Root or roots may also refer to: Art, entertainment, and media * ''The Root'' (magazine), an online magazine focusing ...
of PIE are basic morphemes carrying a lexical meaning. By addition of
suffix In linguistics, a suffix is an affix which is placed after the stem of a word. Common examples are case endings, which indicate the grammatical case of nouns, adjectives, and verb endings, which form the conjugation of verbs. Suffixes can carry ...
es, they form stems, and by addition of
endings End, END, Ending, or variation, may refer to: End *In mathematics: **End (category theory) **End (topology) **End (graph theory) ** End (group theory) (a subcase of the previous) **End (endomorphism) *In sports and games **End (gridiron football) ...
, these form grammatically inflected words ( nouns or verbs). The reconstructed
Indo-European verb Proto-Indo-European verbs reflect a complex system of morphology, more complicated than the substantive, with verbs categorized according to their aspect, using multiple grammatical moods and voices, and being conjugated according to person, nu ...
system is complex and, like the noun, exhibits a system of ablaut.


Diversification

BMAC in "IE languages c. 1500 BC" is Bactria–Margiana Archaeological Complex The diversification of the parent language into the attested branches of daughter languages is historically unattested. The timeline of the evolution of the various daughter languages, on the other hand, is mostly undisputed, quite regardless of the question of
Indo-European origins The Proto-Indo-European homeland (or Indo-European homeland) was the prehistoric linguistic homeland of the Proto-Indo-European language (PIE). From this region, its speakers Indo-European migrations, migrated east and west, and went on to form ...
. Using a mathematical analysis borrowed from evolutionary biology,
Donald Ringe Donald "Don" Ringe () is an American linguist and Indo-Europeanist. Ringe graduated from University of Kentucky and then received a Master of Philosophy in Linguistics as a Marshall Scholar from the University of Oxford. He received Ph.D in lin ...
and
Tandy Warnow Tandy Warnow is an American computer scientist and Grainger Distinguished Chair in Engineering at the University of Illinois at Urbana–Champaign.Tandy Warnow's , retrieved 2020-09-10. She is known for her work on the reconstruction of evolutio ...
propose the following evolutionary tree of Indo-European branches: * Pre-
Anatolian Anatolian or anatolica may refer to: * Anything of, from, or related to the region Anatolia * Anatolians, ancient Indo-European peoples who spoke the Anatolian languages * Anatolian High School, a type of Turkish educational institution * Anatol ...
(before 3500 BC) * Pre- Tocharian * Pre-Italic and Pre-Celtic (before 2500 BC) * Pre-Armenian and Pre-Greek (after 2500 BC) * Proto- Indo-Iranian (2000 BC) * Pre-Germanic and Pre-Balto-Slavic; proto-Germanic c. 500 BC David Anthony proposes the following sequence: * Pre-
Anatolian Anatolian or anatolica may refer to: * Anything of, from, or related to the region Anatolia * Anatolians, ancient Indo-European peoples who spoke the Anatolian languages * Anatolian High School, a type of Turkish educational institution * Anatol ...
(4200 BC) * Pre- Tocharian (3700 BC) * Pre-Germanic (3300 BC) * Pre-Italic and Pre-Celtic (3000 BC) * Pre-Armenian (2800 BC) * Pre-Balto-Slavic (2800 BC) * Pre-Greek (2500 BC) * Proto- Indo-Iranian (2200 BC); split between Iranian and Old Indic 1800 BC From 1500 BC the following sequence may be given: * 1500–1000 BC: The Nordic Bronze Age develops
pre-Proto-Germanic Proto-Germanic (abbreviated PGmc; also called Common Germanic) is the reconstructed proto-language of the Germanic branch of the Indo-European languages. Proto-Germanic eventually developed from pre-Proto-Germanic into three Germanic bran ...
, and the (pre)- Proto-Celtic Urnfield and Hallstatt cultures emerge in Central Europe, introducing the Iron Age. Migration of the Proto- Italic speakers into the Italian peninsula (
Bagnolo stele The Bagnolo steles are two stone boulders found in Ceresolo-Bagnolo, Malegno commune, Brescia province, Lombardia, Northern Italy, at the base of Monte Mignone, at an altitude of ca. 700 m. Bagnolo 1 was discovered in 1963, bearing depictions of ...
). Redaction of the Rigveda and rise of the
Vedic civilization The Vedic period, or the Vedic age (), is the period in the late Bronze Age and early Iron Age of the history of India when the Vedic literature, including the Vedas (ca. 1300–900 BCE), was composed in the northern Indian subcontinent, betwe ...
in the Punjab. The Mycenaean civilization gives way to the
Greek Dark Ages The term Greek Dark Ages refers to the period of Greek history from the end of the Mycenaean palatial civilization, around 1100 BC, to the beginning of the Archaic age, around 750 BC. Archaeological evidence shows a widespread collaps ...
. Hittite goes extinct. * 1000–500 BC: The Celtic languages spread over Central and Western Europe.
Baltic languages The Baltic languages are a branch of the Indo-European language family spoken natively by a population of about 4.5 million people mainly in areas extending east and southeast of the Baltic Sea in Northern Europe. Together with the Slavic lang ...
are spoken in a huge area from present-day Poland to the Ural Mountains.
Proto Germanic Proto-Germanic (abbreviated PGmc; also called Common Germanic) is the reconstructed proto-language of the Germanic branch of the Indo-European languages. Proto-Germanic eventually developed from pre-Proto-Germanic into three Germanic branc ...
. Homer and the beginning of Classical Antiquity. The Vedic Civilization gives way to the
Mahajanapadas The Mahājanapadas ( sa, great realm, from ''maha'', "great", and '' janapada'' "foothold of a people") were sixteen kingdoms or oligarchic republics that existed in ancient India from the sixth to fourth centuries BCE during the second urban ...
. Siddhartha Gautama preaches Buddhism. Zoroaster composes the
Gathas The Gathas ()"Gatha"
''
Achaemenid Empire The Achaemenid Empire or Achaemenian Empire (; peo, 𐎧𐏁𐏂, , ), also called the First Persian Empire, was an ancient Iranian empire founded by Cyrus the Great in 550 BC. Based in Western Asia, it was contemporarily the largest em ...
, replacing the Elamites and
Babylonia Babylonia (; Akkadian: , ''māt Akkadī'') was an ancient Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Syria). It emerged as an Amorite-ruled state c. ...
. Separation of Proto-Italic into Osco-Umbrian and Latin-Faliscan. Genesis of the Greek and Old Italic alphabets. A variety of
Paleo-Balkan languages The Paleo-Balkan languages or Palaeo-Balkan languages is a grouping of various extinct Indo-European languages that were spoken in the Balkans and surrounding areas in ancient times. Paleo-Balkan studies are obscured by the scarce attestation of ...
are spoken in Southern Europe. * 500 BC – 1 BC/AD: Classical Antiquity: spread of Greek and Latin throughout the Mediterranean and, during the Hellenistic period ( Indo-Greeks), to Central Asia and the Hindukush.
Kushan Empire The Kushan Empire ( grc, Βασιλεία Κοσσανῶν; xbc, Κυϸανο, ; sa, कुषाण वंश; Brahmi: , '; BHS: ; xpr, 𐭊𐭅𐭔𐭍 𐭇𐭔𐭕𐭓, ; zh, 貴霜 ) was a syncretic empire, formed by the Yuezhi, i ...
,
Mauryan Empire The Maurya Empire, or the Mauryan Empire, was a geographically extensive Iron Age historical power in the Indian subcontinent based in Magadha, having been founded by Chandragupta Maurya in 322 BCE, and existing in loose-knit fashion until 1 ...
. Proto-Germanic. * 1 BC – AD 500: Late Antiquity, Gupta period; attestation of Armenian. Proto-Slavic. The Roman Empire and then the
Migration period The Migration Period was a period in European history marked by large-scale migrations that saw the fall of the Western Roman Empire and subsequent settlement of its former territories by various tribes, and the establishment of the post-Roman ...
marginalize the Celtic languages to the British Isles. Sogdian, an Eastern Iranian language, becomes the ''
lingua franca A lingua franca (; ; for plurals see ), also known as a bridge language, common language, trade language, auxiliary language, vehicular language, or link language, is a language systematically used to make communication possible between groups ...
'' of the
Silk Road The Silk Road () was a network of Eurasian trade routes active from the second century BCE until the mid-15th century. Spanning over 6,400 kilometers (4,000 miles), it played a central role in facilitating economic, cultural, political, and reli ...
in Central Asia leading to China, due to the proliferation of
Sogdia Sogdia (Sogdian language, Sogdian: ) or Sogdiana was an ancient Iranian peoples, Iranian civilization between the Amu Darya and the Syr Darya, and in present-day Uzbekistan, Turkmenistan, Tajikistan, Kazakhstan, and Kyrgyzstan. Sogdiana was also ...
n merchants there. The last of the Anatolian languages are
extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
. * 500–1000: Early Middle Ages. The Viking Age forms an Old Norse
koine Koine Greek (; Koine el, ἡ κοινὴ διάλεκτος, hē koinè diálektos, the common dialect; ), also known as Hellenistic Greek, common Attic, the Alexandrian dialect, Biblical Greek or New Testament Greek, was the common supra-reg ...
spanning Scandinavia, the British Isles and Iceland. The
Islamic conquest The spread of Islam spans about 1,400 years. Muslim conquests following Muhammad's death led to the creation of the caliphates, occupying a vast geographical area; conversion to Islam was boosted by Arab Muslim forces conquering vast territories ...
and the Turkic expansion results in the
Arabization Arabization or Arabisation ( ar, تعريب, ') describes both the process of growing Arab influence on non-Arab populations, causing a language shift by the latter's gradual adoption of the Arabic language and incorporation of Arab culture, aft ...
and Turkification of significant areas where Indo-European languages were spoken. Tocharian is extinct in the course of the Turkic expansion while
Northeastern Iranian The Eastern Iranian languages are a subgroup of the Iranian languages emerging in Middle Iranian times (from c. the 4th century BC). The Avestan language is often classified as early Eastern Iranian. As opposed to the Middle Western Iranian diale ...
( Scytho-Sarmatian) is reduced to small refugia. Slavic languages spread over wide areas in central, eastern and southeastern Europe, largely replacing Romance in the Balkans (with the exception of Romanian) and whatever was left of the
paleo-Balkan languages The Paleo-Balkan languages or Palaeo-Balkan languages is a grouping of various extinct Indo-European languages that were spoken in the Balkans and surrounding areas in ancient times. Paleo-Balkan studies are obscured by the scarce attestation of ...
with the exception of Albanian. * 1000–1500: Late Middle Ages: Attestation of
Albanian Albanian may refer to: *Pertaining to Albania in Southeast Europe; in particular: **Albanians, an ethnic group native to the Balkans **Albanian language **Albanian culture **Demographics of Albania, includes other ethnic groups within the country ...
and
Baltic Baltic may refer to: Peoples and languages * Baltic languages, a subfamily of Indo-European languages, including Lithuanian, Latvian and extinct Old Prussian *Balts (or Baltic peoples), ethnic groups speaking the Baltic languages and/or originati ...
. * 1500–2000: Early Modern period to present: Colonialism results in the spread of Indo-European languages to every continent, most notably Romance (North, Central and South America, North and Sub-Saharan Africa, West Asia), West Germanic ( English in North America, Sub-Saharan Africa, East Asia and Australia; to a lesser extent Dutch and German), and Russian to Central Asia and North Asia.


Important languages for reconstruction

In reconstructing the history of the Indo-European languages and the form of the Proto-Indo-European language, some languages have been of particular importance. These generally include the ancient Indo-European languages that are both well-attested and documented at an early date, although some languages from later periods are important if they are particularly linguistically conservative (most notably,
Lithuanian Lithuanian may refer to: * Lithuanians * Lithuanian language * The country of Lithuania * Grand Duchy of Lithuania * Culture of Lithuania * Lithuanian cuisine * Lithuanian Jews as often called "Lithuanians" (''Lita'im'' or ''Litvaks'') by other Jew ...
). Early poetry is of special significance because of the rigid poetic meter normally employed, which makes it possible to reconstruct a number of features (e.g. vowel length) that were either unwritten or corrupted in the process of transmission down to the earliest extant written manuscripts. Most noticeable of all: * Vedic Sanskrit (c. 1500–500 BC). This language is unique in that its source documents were all composed orally, and were passed down through oral tradition ( shakha schools) for c. 2,000 years before ever being written down. The oldest documents are all in poetic form; oldest and most important of all is the Rigveda (c. 1500 BC). * Ancient Greek (c. 750–400 BC). Mycenaean Greek (c. 1450 BC) is the oldest recorded form, but its value is lessened by the limited material, restricted subject matter, and highly ambiguous writing system. More important is Ancient Greek, documented extensively beginning with the two Homeric poems (the '' Iliad'' and the '' Odyssey'', c. 750 BC). * Hittite (c. 1700–1200 BC). This is the earliest-recorded of all Indo-European languages, and highly divergent from the others due to the early separation of the
Anatolian languages The Anatolian languages are an extinct branch of Indo-European languages that were spoken in Anatolia, part of present-day Turkey. The best known Anatolian language is Hittite, which is considered the earliest-attested Indo-European language. ...
from the remainder. It possesses some highly archaic features found only fragmentarily, if at all, in other languages. At the same time, however, it appears to have undergone many early phonological and grammatical changes which, combined with the ambiguities of its writing system, hinder its usefulness somewhat. Other primary sources: * Latin, attested in a huge amount of poetic and prose material in the Classical period (c. 200 BC – 100 AD) and limited older material from as early as c. 600 BC. *
Gothic Gothic or Gothics may refer to: People and languages *Goths or Gothic people, the ethnonym of a group of East Germanic tribes **Gothic language, an extinct East Germanic language spoken by the Goths **Crimean Gothic, the Gothic language spoken b ...
(the most archaic well-documented Germanic language, c. 350 AD), along with the combined witness of the other old Germanic languages: most importantly,
Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlement of Britain, Anglo ...
(c. 800–1000 AD), Old High German (c. 750–1000 AD) and Old Norse (c. 1100–1300 AD, with limited earlier sources dating to c. 200 AD). *
Old Avestan Avestan (), or historically Zend, is an umbrella term for two Old Iranian languages: Old Avestan (spoken in the 2nd millennium BCE) and Younger Avestan (spoken in the 1st millennium BCE). They are known only from their conjoined use as the scrip ...
(c. 1700–1200 BC) and
Younger Avestan Avestan (), or historically Zend, is an umbrella term for two Old Iranian languages: Old Avestan (spoken in the 2nd millennium BCE) and Younger Avestan (spoken in the 1st millennium BCE). They are known only from their conjoined use as the scrip ...
(c. 900 BC). Documentation is sparse, but nonetheless quite important due to its highly archaic nature. * Modern
Lithuanian Lithuanian may refer to: * Lithuanians * Lithuanian language * The country of Lithuania * Grand Duchy of Lithuania * Culture of Lithuania * Lithuanian cuisine * Lithuanian Jews as often called "Lithuanians" (''Lita'im'' or ''Litvaks'') by other Jew ...
, with limited records in
Old Lithuanian Lithuanian ( ) is an Eastern Baltic language belonging to the Baltic branch of the Indo-European language family. It is the official language of Lithuania and one of the official languages of the European Union. There are about 2.8 milli ...
(c. 1500–1700 AD). *
Old Church Slavonic Old Church Slavonic or Old Slavonic () was the first Slavic languages, Slavic literary language. Historians credit the 9th-century Byzantine Empire, Byzantine missionaries Saints Cyril and Methodius with Standard language, standardizing the lan ...
(c. 900–1000 AD). Other secondary sources, of lesser value due to poor attestation: * Luwian, Lycian, Lydian and other
Anatolian languages The Anatolian languages are an extinct branch of Indo-European languages that were spoken in Anatolia, part of present-day Turkey. The best known Anatolian language is Hittite, which is considered the earliest-attested Indo-European language. ...
(c. 1400–400 BC). * Oscan, Umbrian and other Old Italic languages (c. 600–200 BC). *
Old Persian Old Persian is one of the two directly attested Old Iranian languages (the other being Avestan language, Avestan) and is the ancestor of Middle Persian (the language of Sasanian Empire). Like other Old Iranian languages, it was known to its native ...
(c. 500 BC). * Old Prussian (c. 1350–1600 AD); even more archaic than Lithuanian. Other secondary sources, of lesser value due to extensive phonological changes and relatively limited attestation: * Old Irish (c. 700–850 AD). * Tocharian (c. 500–800 AD), underwent large phonetic shifts and mergers in the proto-language, and has an almost entirely reworked declension system. *
Classical Armenian Classical Armenian (, in Eastern Armenian pronunciation: Grabar, Western Armenian: Krapar; meaning "literary anguage; also Old Armenian or Liturgical Armenian) is the oldest attested form of the Armenian language. It was first written down at ...
(c. 400–1000 AD). *
Albanian Albanian may refer to: *Pertaining to Albania in Southeast Europe; in particular: **Albanians, an ethnic group native to the Balkans **Albanian language **Albanian culture **Demographics of Albania, includes other ethnic groups within the country ...
(c. 1450–current time).


Sound changes

As the Proto-Indo-European (PIE) language broke up, its sound system diverged as well, changing according to various
sound law A sound change, in historical linguistics, is a change in the pronunciation of a language. A sound change can involve the replacement of one speech sound (or, more generally, one phonetic feature value) by a different one (called phonetic chang ...
s evidenced in the daughter languages. PIE is normally reconstructed with a complex system of 15
stop consonant In phonetics, a plosive, also known as an occlusive or simply a stop, is a pulmonic consonant in which the vocal tract is blocked so that all airflow ceases. The occlusion may be made with the tongue tip or blade (, ), tongue body (, ), lips ...
s, including an unusual three-way
phonation The term phonation has slightly different meanings depending on the subfield of phonetics. Among some phoneticians, ''phonation'' is the process by which the vocal folds produce certain sounds through quasi-periodic vibration. This is the defini ...
( voicing) distinction between voiceless, voiced and "
voiced aspirated Breathy voice (also called murmured voice, whispery voice, soughing and susurration) is a phonation in which the vocal folds vibrate, as they do in normal (modal) voicing, but are adjusted to let more air escape which produces a sighing-like ...
" (i.e.
breathy voiced Breathy voice (also called murmured voice, whispery voice, soughing and susurration) is a phonation in which the vocal folds vibrate, as they do in normal (modal) voicing, but are adjusted to let more air escape which produces a sighing-like ...
) stops, and a three-way distinction among velar consonants (''k''-type sounds) between "palatal" ''ḱ ǵ ǵh'', "plain velar" ''k g gh'' and labiovelar ''kʷ gʷ gʷh''. (The correctness of the terms ''palatal'' and ''plain velar'' is disputed; see
Proto-Indo-European phonology The phonology of the Proto-Indo-European language (PIE) has been reconstructed by linguists, based on the similarities and differences among current and extinct Indo-European languages. Because PIE was not written, linguists must rely on the evi ...
.) All daughter languages have reduced the number of distinctions among these sounds, often in divergent ways. As an example, in English, one of the Germanic languages, the following are some of the major changes that happened: None of the daughter-language families (except possibly
Anatolian Anatolian or anatolica may refer to: * Anything of, from, or related to the region Anatolia * Anatolians, ancient Indo-European peoples who spoke the Anatolian languages * Anatolian High School, a type of Turkish educational institution * Anatol ...
, particularly Luvian) reflect the plain velar stops differently from the other two series, and there is even a certain amount of dispute whether this series existed at all in PIE. The major distinction between ''centum'' and ''satem'' languages corresponds to the outcome of the PIE plain velars: * The "central" ''satem'' languages ( Indo-Iranian, Balto-Slavic,
Albanian Albanian may refer to: *Pertaining to Albania in Southeast Europe; in particular: **Albanians, an ethnic group native to the Balkans **Albanian language **Albanian culture **Demographics of Albania, includes other ethnic groups within the country ...
, and Armenian) reflect both "plain velar" and labiovelar stops as plain velars, often with secondary
palatalization Palatalization may refer to: *Palatalization (phonetics), the phonetic feature of palatal secondary articulation *Palatalization (sound change) Palatalization is a historical-linguistic sound change that results in a palatalized articulation ...
before a
front vowel A front vowel is a class of vowel sounds used in some spoken languages, its defining characteristic being that the highest point of the tongue is positioned as far forward as possible in the mouth without creating a constriction that would otherw ...
(''e i ē ī''). The "palatal" stops are palatalized and often appear as
sibilant Sibilants are fricative consonants of higher amplitude and pitch, made by directing a stream of air with the tongue towards the teeth. Examples of sibilants are the consonants at the beginning of the English words ''sip'', ''zip'', ''ship'', and ...
s (usually but not always distinct from the secondarily palatalized stops). * The "peripheral" ''centum'' languages ( Germanic, Italic,
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
, Greek,
Anatolian Anatolian or anatolica may refer to: * Anything of, from, or related to the region Anatolia * Anatolians, ancient Indo-European peoples who spoke the Anatolian languages * Anatolian High School, a type of Turkish educational institution * Anatol ...
and Tocharian) reflect both "palatal" and "plain velar" stops as plain velars, while the labiovelars continue unchanged, often with later reduction into plain
labial The term ''labial'' originates from '' Labium'' (Latin for "lip"), and is the adjective that describes anything of or related to lips, such as lip-like structures. Thus, it may refer to: * the lips ** In linguistics, a labial consonant ** In zoolog ...
or velar consonants. The three-way PIE distinction between voiceless, voiced and voiced aspirated stops is considered extremely unusual from the perspective of
linguistic typology Linguistic typology (or language typology) is a field of linguistics that studies and classifies languages according to their structural features to allow their comparison. Its aim is to describe and explain the structural diversity and the co ...
—particularly in the existence of voiced aspirated stops without a corresponding series of voiceless aspirated stops. None of the various daughter-language families continue it unchanged, with numerous "solutions" to the apparently unstable PIE situation: * The Indo-Aryan languages preserve the three series unchanged but have evolved a fourth series of voiceless aspirated consonants. * The Iranian languages probably passed through the same stage, subsequently changing the aspirated stops into fricatives. * Greek converted the voiced aspirates into voiceless aspirates. * Italic probably passed through the same stage, but reflects the voiced aspirates as voiceless fricatives, especially ''f'' (or sometimes plain voiced stops in Latin). *
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
, Balto-Slavic,
Anatolian Anatolian or anatolica may refer to: * Anything of, from, or related to the region Anatolia * Anatolians, ancient Indo-European peoples who spoke the Anatolian languages * Anatolian High School, a type of Turkish educational institution * Anatol ...
, and
Albanian Albanian may refer to: *Pertaining to Albania in Southeast Europe; in particular: **Albanians, an ethnic group native to the Balkans **Albanian language **Albanian culture **Demographics of Albania, includes other ethnic groups within the country ...
merge the voiced aspirated into plain voiced stops. * Germanic and Armenian change all three series in a chain shift (e.g. with ''bh b p'' becoming ''b p f'' (known as '' Grimm's law'' in Germanic)). Among the other notable changes affecting consonants are: * The Ruki sound law (''s'' becomes before ''r, u, k, i'') in the '' satem'' languages. * Loss of prevocalic ''p'' in Proto-Celtic. * Development of prevocalic ''s'' to ''h'' in Proto-Greek, with later loss of ''h'' between vowels. * Verner's law in Proto-Germanic. * Grassmann's law (dissimilation of aspirates) independently in Proto-Greek and Proto-Indo-Iranian. The following table shows the basic outcomes of PIE consonants in some of the most important daughter languages for the purposes of reconstruction. For a fuller table, see Indo-European sound laws. :Notes: * C- At the beginning of a word. * -C- Between vowels. * -C At the end of a word. * `-C- Following an unstressed vowel ( Verner's law). * -C-(rl) Between vowels, or between a vowel and (on either side). * CT Before a (PIE) stop (). * CT− After a (PIE) obstruent (, etc.; ). * C(T) Before or after an obstruent (, etc.; ). * CH Before an original laryngeal. * CE Before a (PIE) front vowel (). * CE' Before secondary (post-PIE) front-vowels. * Ce Before . * C(u) Before or after a (PIE) (
boukólos rule The boukólos rule is a phonological rule of the Proto-Indo-European language (PIE). It states that a labiovelar stop () dissimilates to an ordinary velar stop () next to the vowel or its corresponding glide . The rule is named after an exampl ...
). * C(O) Before or after a (PIE) (
boukólos rule The boukólos rule is a phonological rule of the Proto-Indo-European language (PIE). It states that a labiovelar stop () dissimilates to an ordinary velar stop () next to the vowel or its corresponding glide . The rule is named after an exampl ...
). * Cn− After . * CR Before a
sonorant In phonetics and phonology, a sonorant or resonant is a speech sound that is produced with continuous, non-turbulent airflow in the vocal tract; these are the manners of articulation that are most often voiced in the world's languages. Vowels are ...
(). * C(R) Before or after a
sonorant In phonetics and phonology, a sonorant or resonant is a speech sound that is produced with continuous, non-turbulent airflow in the vocal tract; these are the manners of articulation that are most often voiced in the world's languages. Vowels are ...
(). * C(r),l,u− Before or after . * Cruki− After ( Ruki sound law). * C..Ch Before an aspirated consonant in the next syllable ( Grassmann's law, also known as dissimilation of aspirates). * CE..Ch Before a (PIE) front vowel () as well as before an aspirated consonant in the next syllable ( Grassmann's law, also known as dissimilation of aspirates). * C(u)..Ch Before or after a (PIE) as well as before an aspirated consonant in the next syllable ( Grassmann's law, also known as dissimilation of aspirates).


Comparison of conjugations

The following table presents a comparison of conjugations of the thematic present indicative of the verbal root * of the English verb '' to bear'' and its reflexes in various early attested IE languages and their modern descendants or relatives, showing that all languages had in the early stage an inflectional verb system. While similarities are still visible between the modern descendants and relatives of these ancient languages, the differences have increased over time. Some IE languages have moved from
synthetic Synthetic things are composed of multiple parts, often with the implication that they are artificial. In particular, 'synthetic' may refer to: Science * Synthetic chemical or compound, produced by the process of chemical synthesis * Synthetic o ...
verb systems to largely
periphrastic In linguistics, periphrasis () is the use of one or more function words to express meaning that otherwise may be expressed by attaching an affix or clitic to a word. The resulting phrase includes two or more collocated words instead of one infl ...
systems. In addition, the pronouns of periphrastic forms are in parentheses when they appear. Some of these verbs have undergone a change in meaning as well. * In Modern Irish ''beir'' usually only carries the meaning ''to bear'' in the sense of bearing a child; its common meanings are ''to catch, grab''. Apart from the first person, the forms given in the table above are dialectical or obsolete. The second and third person forms are typically instead conjugated periphrastically by adding a pronoun after the verb: ''beireann tú, beireann sé/sí, beireann sibh, beireann siad''. * The
Hindustani Hindustani may refer to: * something of, from, or related to Hindustan (another name of India) * Hindustani language, an Indo-Aryan language, whose two official norms are Hindi and Urdu * Fiji Hindi, a variety of Eastern Hindi spoken in Fiji, and ...
( Hindi and Urdu) verb ''bʰarnā'', the continuation of the Sanskrit verb, can have a variety of meanings, but the most common is "to fill". The forms given in the table, although etymologically derived from the present indicative, now have the meaning of
future subjunctive The subjunctive (also known as conjunctive in some languages) is a grammatical mood, a feature of the utterance that indicates the speaker's attitude towards it. Subjunctive forms of verbs are typically used to express various states of unreality ...
. The loss of the present indicative in Hindustani is roughly compensated by the periphrastic habitual indicative construction, using the habitual participle (etymologically from the Sanskrit present participle ''bʰarant-'') and an auxiliary: ''ma͠i bʰartā hū̃, tū bʰartā hai, vah bʰartā hai, ham bʰarte ha͠i, tum bʰarte ho, ve bʰarte ha͠i'' (masculine forms). * German is not directly descended from Gothic, but the Gothic forms are a close approximation of what the early West Germanic forms of c. 400 AD would have looked like. The descendant of Proto-Germanic ''*beraną'' (English ''bear'') survives in German only in the compound ''gebären'', meaning "bear (a child)". * The Latin verb ''ferre'' is irregular, and not a good representative of a normal thematic verb. In most Romance languages such as Portuguese, other verbs now mean "to carry" (e.g. Pt. ''portar'' < Lat. ''portare'') and ''ferre'' was borrowed and nativized only in compounds such as "to suffer" (from Latin ''sub-'' and ''ferre'') and "to confer" (from Latin "con-" and "ferre"). * In Modern Greek, ''phero'' φέρω (modern transliteration ''fero'') "to bear" is still used but only in specific contexts and is most common in such compounds as αναφέρω, διαφέρω, εισφέρω, εκφέρω, καταφέρω, προφέρω, προαναφέρω, προσφέρω etc. The form that is (very) common today is ''pherno'' φέρνω (modern transliteration ''ferno'') meaning "to bring". Additionally, the perfective form of ''pherno'' (used for the subjunctive voice and also for the future tense) is also ''phero''. * The dual forms are archaic in standard Lithuanian, and are only presently used in some dialects (e.g. Samogitian). * Among modern Slavic languages, only Slovene continues to have a dual number in the standard variety.


Comparison of cognates


Present distribution

Today, Indo-European languages are spoken by billions of native speakers across all inhabited continents, the largest number by far for any recognised language family. Of the 20 languages with the largest numbers of speakers according to ''Ethnologue'', 10 are Indo-European: English,
Hindustani Hindustani may refer to: * something of, from, or related to Hindustan (another name of India) * Hindustani language, an Indo-Aryan language, whose two official norms are Hindi and Urdu * Fiji Hindi, a variety of Eastern Hindi spoken in Fiji, and ...
, Spanish,
Bengali Bengali or Bengalee, or Bengalese may refer to: *something of, from, or related to Bengal, a large region in South Asia * Bengalis, an ethnic and linguistic group of the region * Bengali language, the language they speak ** Bengali alphabet, the w ...
,
French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
, Russian, Portuguese,
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...
, Persian and
Punjabi Punjabi, or Panjabi, most often refers to: * Something of, from, or related to Punjab, a region in India and Pakistan * Punjabi language * Punjabi people * Punjabi dialects and languages Punjabi may also refer to: * Punjabi (horse), a British Th ...
, each with 100 million speakers or more. Additionally, hundreds of millions of persons worldwide study Indo-European languages as secondary or tertiary languages, including in cultures which have completely different language families and historical backgrounds—there are around 600 million learners of English alone. The success of the language family, including the large number of speakers and the vast portions of the Earth that they inhabit, is due to several factors. The ancient
Indo-European migrations The Indo-European migrations were hypothesized migrations of Proto-Indo-European language (PIE) speakers, and subsequent migrations of people speaking derived Indo-European languages, which took place approx. 4000 to 1000 BCE, potentially expla ...
and widespread dissemination of Indo-European culture throughout Eurasia, including that of the Proto-Indo-Europeans themselves, and that of their daughter cultures including the Indo-Aryans, Iranian peoples, Celts, Greeks, Romans, Germanic peoples, and
Slavs Slavs are the largest European ethnolinguistic group. They speak the various Slavic languages, belonging to the larger Balto-Slavic branch of the Indo-European languages. Slavs are geographically distributed throughout northern Eurasia, main ...
, led to these peoples' branches of the language family already taking a dominant foothold in virtually all of Eurasia except for swathes of the
Near East The ''Near East''; he, המזרח הקרוב; arc, ܕܢܚܐ ܩܪܒ; fa, خاور نزدیک, Xāvar-e nazdik; tr, Yakın Doğu is a geographical term which roughly encompasses a transcontinental region in Western Asia, that was once the hist ...
, North and East Asia, replacing many (but not all) of the previously-spoken
pre-Indo-European languages The Pre-Indo-European languages are any of several ancient languages, not necessarily related to one another, that existed in Prehistoric Europe and Southern Asia before the arrival of speakers of Indo-European languages. The oldest Indo-Europe ...
of this extensive area. However Semitic languages remain dominant in much of the Middle East and North Africa, and Caucasian languages in much of the Caucasus region. Similarly in Europe and the Urals the Uralic languages (such as Hungarian, Finnish, Estonian etc.) remain, as does Basque, a pre-Indo-European isolate. Despite being unaware of their common linguistic origin, diverse groups of Indo-European speakers continued to culturally dominate and often replace the indigenous languages of the western two-thirds of Eurasia. By the beginning of the Common Era, Indo-European peoples controlled almost the entirety of this area: the Celts western and central Europe, the Romans southern Europe, the Germanic peoples northern Europe, the Slavs eastern Europe, the Iranian peoples most of western and central Asia and parts of eastern Europe, and the Indo-Aryan peoples in the Indian subcontinent, with the Tocharians inhabiting the Indo-European frontier in western China. By the medieval period, only the
Semitic Semitic most commonly refers to the Semitic languages, a name used since the 1770s to refer to the language family currently present in West Asia, North and East Africa, and Malta. Semitic may also refer to: Religions * Abrahamic religions ** ...
, Dravidian,
Caucasian Caucasian may refer to: Anthropology *Anything from the Caucasus region ** ** ** ''Caucasian Exarchate'' (1917–1920), an ecclesiastical exarchate of the Russian Orthodox Church in the Caucasus region * * * Languages * Northwest Caucasian l ...
, and Uralic languages, and the
language isolate Language isolates are languages that cannot be classified into larger language families. Korean and Basque are two of the most common examples. Other language isolates include Ainu in Asia, Sandawe in Africa, and Haida in North America. The num ...
Basque remained of the (relatively) indigenous languages of Europe and the western half of Asia. Despite medieval invasions by Eurasian nomads, a group to which the Proto-Indo-Europeans had once belonged, Indo-European expansion reached another peak in the early modern period with the dramatic increase in the population of the Indian subcontinent and European expansionism throughout the globe during the Age of Discovery, as well as the continued replacement and assimilation of surrounding non-Indo-European languages and peoples due to increased state centralization and nationalism. These trends compounded throughout the modern period due to the general global
population growth Population growth is the increase in the number of people in a population or dispersed group. Actual global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to ...
and the results of European colonization of the Western Hemisphere and Oceania, leading to an explosion in the number of Indo-European speakers as well as the territories inhabited by them. Due to colonization and the modern dominance of Indo-European languages in the fields of politics, global science, technology, education, finance, and sports, even many modern countries whose populations largely speak non-Indo-European languages have Indo-European languages as official languages, and the majority of the global population speaks at least one Indo-European language. The overwhelming majority of languages used on the Internet are Indo-European, with English continuing to lead the group; English in general has in many respects become the ''lingua franca'' of global communication.


See also

*
Grammatical conjugation In linguistics, conjugation () is the creation of derived forms of a verb from its principal parts by inflection (alteration of form according to rules of grammar). For instance, the verb ''break'' can be conjugated to form the words ''break'', ...
* '' The Horse, the Wheel, and Language'' (book) * Indo-European copula * Indo-European sound laws * Indo-European studies *
Indo-Semitic languages The Indo-Semitic hypothesis maintains that a genetic relationship exists between Indo-European and Semitic and that the Indo-European and the Semitic language families descend from a prehistoric language ancestral to them both. The theory has ne ...
*
Indo-Uralic languages Indo-Uralic is a controversial hypothetical language family consisting of Indo-European and Uralic. The suggestion of a genetic relationship between Indo-European and Uralic is often credited to the Danish linguist Vilhelm Thomsen in 1869 (Pe ...
*
Eurasiatic languages Eurasiatic is a proposed language macrofamily that would include many language families historically spoken in northern, western, and southern Eurasia. The idea of a Eurasiatic superfamily dates back more than 100 years. Joseph Greenberg's prop ...
* Language family * Languages of Asia *
Languages of Europe Most languages of Europe belong to the Indo-European language family. Out of a total European population of 744 million as of 2018, some 94% are native speakers of an Indo-European language. Within Indo-European, the three largest phyla are Rom ...
* Languages of India *
List of Indo-European languages The Indo-European languages include some 449 (SIL International, SIL estimate, 2018 edition) languages spoken by about or more than 3.5 billion people (roughly half of the world population). Most of the major languages belonging to language br ...
* Proto-Indo-European root * Proto-Indo-European religion


Notes


References


Citations


Sources

* * * * * Paperback: ISBN 978-9027211866. * * * * * * * * * * * * *
Part II via Internet Archive
* ** Reprinted in * *


Further reading

* * * * * * * * * * * * *


External links


Encyclopedia of Indo-European Culture (1997)


Databases

* * * * . * *

an online collection of introductory videos to Ancient Indo-European languages produced by the University of Göttingen


Lexica

* * * * {{DEFAULTSORT:Indo-European Languages
Languages Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of met ...
Language families