Interlingua (, ) is an
international auxiliary language
An international auxiliary language (sometimes acronymized as IAL or contracted as auxlang) is a language meant for communication between people from different nations, who do not share a common first language. An auxiliary language is primarily a ...
(IAL) developed between 1937 and 1951 by the American
International Auxiliary Language Association (IALA). It is a
constructed language of the "naturalistic" variety, whose vocabulary, grammar, and other characteristics are derived from
natural languages. Interlingua literature maintains that (written) Interlingua is comprehensible to the billions of people who speak
Romance languages
The Romance languages, also known as the Latin or Neo-Latin languages, are the languages that are Language family, directly descended from Vulgar Latin. They are the only extant subgroup of the Italic languages, Italic branch of the Indo-E ...
, though it is actively spoken by only a few hundred.
Interlingua was developed to combine a simple, mostly regular grammar with a vocabulary common to a wide range of western European languages, making it easy to learn for those whose native languages were sources of Interlingua's
vocabulary
A vocabulary (also known as a lexicon) is a set of words, typically the set in a language or the set known to an individual. The word ''vocabulary'' originated from the Latin , meaning "a word, name". It forms an essential component of languag ...
and grammar.
The name Interlingua comes from the Latin words ', meaning 'between', and ', meaning 'tongue' or 'language'. These
morpheme
A morpheme is any of the smallest meaningful constituents within a linguistic expression and particularly within a word. Many words are themselves standalone morphemes, while other words contain multiple morphemes; in linguistic terminology, this ...
s are the same in Interlingua; thus, ''Interlingua'' would mean 'between language'.
Overview
Interlingua focuses on common vocabulary shared by Western European languages, which are often descended from or heavily influenced by the
Latin language
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
(such as the
Romance languages
The Romance languages, also known as the Latin or Neo-Latin languages, are the languages that are Language family, directly descended from Vulgar Latin. They are the only extant subgroup of the Italic languages, Italic branch of the Indo-E ...
) and
Greek language
Greek (, ; , ) is an Indo-European languages, Indo-European language, constituting an independent Hellenic languages, Hellenic branch within the Indo-European language family. It is native to Greece, Cyprus, Italy (in Calabria and Salento), south ...
. Interlingua organizers have four "primary control languages" where, by default, a word (or variant thereof) is expected to appear in at least three of them to qualify for inclusion in Interlingua. These are
English;
French;
Italian; and a combination of
Spanish and
Portuguese which are treated as a single mega-language for Interlingua purposes. Additionally,
German and
Russian have been dubbed "secondary control languages". While the result is often akin to
Neo-Latin
Neo-LatinSidwell, Keith ''Classical Latin-Medieval Latin-Neo Latin'' in ; others, throughout. (also known as New Latin and Modern Latin) is the style of written Latin used in original literary, scholarly, and scientific works, first in Italy d ...
as the most frequent source of commonality, Interlingua words can have origins in any language, as long as they have drifted into the primary control languages as
loanword
A loanword (also a loan word, loan-word) is a word at least partly assimilated from one language (the donor language) into another language (the recipient or target language), through the process of borrowing. Borrowing is a metaphorical term t ...
s. For example, the
Japanese words ''
geisha
{{Culture of Japan, Traditions, Geisha
{{nihongo, Geisha{{efn, {{IPAc-en, lang, ˈ, ɡ, eɪ, ., ʃ, ə, {{IPA, ja, ɡei.ɕa, ɡeː-, lang{{cite book, script-title=ja:NHK日本語発音アクセント新辞典, publisher=NHK Publishing, editor= ...
'' and ''
samurai
The samurai () were members of the warrior class in Japan. They were originally provincial warriors who came from wealthy landowning families who could afford to train their men to be mounted archers. In the 8th century AD, the imperial court d ...
'' and the
Finnish word ''
sauna'' are used in most Western European languages, and therefore in Interlingua as well; similarly, the
Guugu Yimithirr word ''gangurru'' is used in
latinized form (Interlingua: , English: ''
kangaroo'').
The maintainers of Interlingua attempt to keep the grammar simple and word formation regular, and use only a small number of
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 focusin ...
and
affix
In linguistics, an affix is a morpheme that is attached to a word stem to form a new word or word form. The main two categories are Morphological derivation, derivational and inflectional affixes. Derivational affixes, such as ''un-'', ''-ation' ...
es. This is intended to make the language quicker to learn.
History
The American heiress
Alice Vanderbilt Morris (1874–1950) became interested in
linguistics
Linguistics is the scientific study of language. The areas of linguistic analysis are syntax (rules governing the structure of sentences), semantics (meaning), Morphology (linguistics), morphology (structure of words), phonetics (speech sounds ...
and the
international auxiliary language
An international auxiliary language (sometimes acronymized as IAL or contracted as auxlang) is a language meant for communication between people from different nations, who do not share a common first language. An auxiliary language is primarily a ...
movement in the early 1920s. In 1924, Morris and her husband,
Dave Hennen Morris, established the non-profit
International Auxiliary Language Association (IALA) in
New York City
New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
. Their aim was to place the study of IALs on a more complex and scientific basis. Morris developed the research program of IALA in consultation with
Edward Sapir,
William Edward Collinson, and
Otto Jespersen.
Investigations of the auxiliary language problem were in progress at the International Research Council, the American Council on Education, the American Council of Learned Societies, the British, French, Italian, and American Associations for the advancement of science, and other groups of specialists. Morris created IALA as a continuation of this work.
International Auxiliary Language Association
The IALA became a major supporter of mainstream American linguistics. Numerous studies by Sapir, Collinson, and
Morris Swadesh in the 1930s and 1940s, for example, were funded by IALA. Alice Morris edited several of these studies and provided much of IALA's financial support. For example, Morris herself edited Sapir and
Morris Swadesh's 1932 cross-linguistic study of ending-point phenomena, and Collinson's 1937 study of indication. IALA also received support from groups such as the
Carnegie Corporation, the
Ford Foundation
The Ford Foundation is an American private foundation with the stated goal of advancing human welfare. Created in 1936 by Edsel Ford and his father Henry Ford, it was originally funded by a $25,000 (about $550,000 in 2023) gift from Edsel Ford. ...
, the
Research Corporation, and the
Rockefeller Foundation
The Rockefeller Foundation is an American private foundation and philanthropic medical research and arts funding organization based at 420 Fifth Avenue, New York City. The foundation was created by Standard Oil magnate John D. Rockefeller (" ...
.
In its early years, IALA concerned itself with three tasks: finding other organizations around the world with similar goals; building a library of books about languages and
interlinguistics; and comparing extant IALs, including
Esperanto
Esperanto (, ) is the world's most widely spoken Constructed language, constructed international auxiliary language. Created by L. L. Zamenhof in 1887 to be 'the International Language' (), it is intended to be a universal second language for ...
,
Esperanto II,
Ido,
Peano's Interlingua (Latino sine flexione),
Novial, and
Interlingue
Interlingue (; ISO 639 ''ie'', ''ile''), originally Occidental (), is an international auxiliary language created in 1922 and renamed in 1949. Its creator, Edgar de Wahl, sought to achieve maximal Grammaticality, grammatical regularity and Na ...
(Occidental). In pursuit of the last goal, it conducted parallel studies of these languages, with comparative studies of national languages.
At the Second International Interlanguage Congress, held in
Geneva
Geneva ( , ; ) ; ; . is the List of cities in Switzerland, second-most populous city in Switzerland and the most populous in French-speaking Romandy. Situated in the southwest of the country, where the Rhône exits Lake Geneva, it is the ca ...
in 1931, IALA began to break new ground; 27 recognized linguists signed a testimonial of support for IALA's research program. An additional eight added their signatures at the third congress, convened in Rome in 1933. That same year,
Herbert N. Shenton and
Edward Thorndike became influential in IALA's work by authoring studies in the interlinguistic field.
The first steps towards the finalization of Interlingua were taken in 1937, when a committee of 24 linguists from 19 universities published ''Some Criteria for an International Language and Commentary''. However, the outbreak of
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
in 1939 cut short the intended biannual meetings of the committee.
Development of a new language
Originally, the association had not intended to create its own language. Its goal was to identify which auxiliary language already available was best suited for international communication, and how to promote it more effectively. However, after ten years of research, many members of IALA concluded that none of the existing
interlanguage
An interlanguage is an idiolect developed by a learner of a second language (L2) which preserves some features of their first language (L1) and can overgeneralize some L2 writing and speaking rules. These two characteristics give an interlangu ...
s were up to the task. By 1937, the members had made the decision to create a new language, to the surprise of the world's interlanguage community.
To that point, much of the debate had been equivocal on the decision to use naturalistic (e.g.,
Peano's Interlingua,
Novial and
Occidental) or systematic (e.g.,
Esperanto
Esperanto (, ) is the world's most widely spoken Constructed language, constructed international auxiliary language. Created by L. L. Zamenhof in 1887 to be 'the International Language' (), it is intended to be a universal second language for ...
and
Ido) words. During the war years, proponents of a naturalistic interlanguage won out. The first support was Thorndike's paper; the second was a concession by proponents of the systematic languages that thousands of words were already present in many, or even a majority, of the European languages. Their argument was that systematic derivation of words was a
Procrustean bed, forcing the learner to unlearn and re-memorize a new derivation scheme when a usable vocabulary was already available. IALA from that point assumed the position that a naturalistic language would be best.
IALA's research activities were based in
Liverpool
Liverpool is a port City status in the United Kingdom, city and metropolitan borough in Merseyside, England. It is situated on the eastern side of the River Mersey, Mersey Estuary, near the Irish Sea, north-west of London. With a population ...
, before relocating to
New York due to the outbreak of
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, where
E. Clark Stillman established a new research staff. Stillman, with the assistance of
Alexander Gode, constructed the methodology for selecting Interlingua vocabulary based on a comparison of control languages.
In 1943 Stillman left for war work and Gode became Acting Director of Research. IALA began to develop models of the proposed language, the first of which were presented in Morris's ''General Report'' in 1945.
The four models
From 1946 to 1948, French linguist
André Martinet was Director of Research. During this period IALA continued to develop models and conducted polling to determine the optimal form of the final language. In 1946, IALA sent an extensive survey to more than 3,000 language teachers and related professionals on three continents.
Model P was unchanged from 1945; Model M was relatively modern in comparison to more classical P. Model K was slightly modified in the direction of Ido. The resulting four models that were canvassed were:
An example sentence:
The vote total ended up as follows: P 26.6%, M 37.5%, C 20%, and K 15%. The two more schematic models, C and K, were rejected. Of the two naturalistic models, M attracted somewhat more support than P. Taking national biases into account (for example, the French who were polled disproportionately favored Model M), IALA decided on a compromise between models M and P, with certain elements of C.
Finalization
The German-American Gode and the French Martinet did not get along. Martinet resigned and took up a position at
Columbia University
Columbia University in the City of New York, commonly referred to as Columbia University, is a Private university, private Ivy League research university in New York City. Established in 1754 as King's College on the grounds of Trinity Churc ...
in 1948, and Gode took on the last phase of Interlingua's development. His task was to combine elements of Model M and Model P; take the flaws seen in both by the polled community and repair them with elements of Model C as needed; and develop a vocabulary. Alice Vanderbilt Morris died in 1950, and the funding that had sustained IALA ceased, but sufficient funds remained to publish a dictionary and grammar. The vocabulary and grammar of Interlingua were first presented in 1951, when IALA published the finalized ''
Interlingua Grammar'' and the
Interlingua–English Dictionary (IED). In 1954, IALA published an introductory manual entitled ''
Interlingua a Prime Vista'' ("Interlingua at First Sight").
Interlingua as presented by the IALA is very close to
Peano's Interlingua (Latino sine flexione), both in its grammar and especially in its vocabulary. A distinct abbreviation was adopted: IA instead of IL.
Interlingua's first decades
An early practical application of Interlingua was the scientific newsletter ''Spectroscopia Molecular'', published from 1952 to 1980. In 1954, the Second World Cardiological Congress in Washington, D.C. released summaries of its talks in both English and Interlingua. Within a few years, it found similar use at nine further medical congresses. Between the mid-1950s and the late 1970s, some thirty scientific and medical journals provided article summaries in Interlingua. Gode wrote a monthly column in Interlingua in the ''Science Newsletter'' published by the
Science Service from the early 1950s until his death in 1970.
IALA closed its doors in 1953 but was not formally dissolved until 1956 or later. Its role in promoting Interlingua was largely taken on by Science Service, which hired Gode as head of its newly formed
Interlingua Division.
Hugh E. Blair, Gode's close friend and colleague, became his assistant. A successor organization, the Interlingua Institute, was founded in 1970 to promote Interlingua in the US and Canada. The new institute supported the work of other linguistic organizations, made considerable scholarly contributions and produced Interlingua summaries for scholarly and medical publications. One of its largest achievements was two immense volumes on phytopathology produced by the American Phytopathological Society in 1976 and 1977.
Beginning in the 1980s, UMI has held international conferences every two years (typical attendance at the earlier meetings was 50 to 100) and launched a publishing programme that eventually produced over 100 volumes. Several
Scandinavia
Scandinavia is a subregion#Europe, subregion of northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. ''Scandinavia'' most commonly refers to Denmark, Norway, and Sweden. It can sometimes also ...
n schools undertook projects that used Interlingua as a means of teaching the international scientific and intellectual vocabulary.
In 2000, the Interlingua Institute was dissolved amid funding disputes with the UMI; the American Interlingua Society, established the following year, succeeded the institute.
Interlingua today
The original goal of an interlanguage meant for global events has faced competition from
English as a lingua franca and
International English in the 21st century. The scientific community frequently uses English in international conferences and publications, for example, rather than Interlingua. However, the rise of the Internet has made it easier for the general public with an interest in constructed languages to learn Interlingua. Interlingua is promoted internationally by the Union Mundial pro Interlingua. Periodicals and books are produced by national organizations, such as the Societate American pro Interlingua, the Svenska Sällskapet för Interlingua, and the Union Brazilian pro Interlingua.
''
Panorama in Interlingua'' is the most prominent of several Interlingua periodicals. It is a 28-page magazine published bimonthly that covers current events, science, editorials, and Interlingua.
Community
It is not certain how many people have an active knowledge of Interlingua. Most constructed languages other than
Esperanto
Esperanto (, ) is the world's most widely spoken Constructed language, constructed international auxiliary language. Created by L. L. Zamenhof in 1887 to be 'the International Language' (), it is intended to be a universal second language for ...
have very few speakers. The Hungarian census of 2001, which collected information about languages spoken, found just two people in the entire country who claimed to speak Interlingua.
Advocates say that Interlingua's greatest advantage is that it is the most widely ''understood''
international auxiliary language
An international auxiliary language (sometimes acronymized as IAL or contracted as auxlang) is a language meant for communication between people from different nations, who do not share a common first language. An auxiliary language is primarily a ...
besides
Interlingua (IL) de A.p.I. by virtue of its naturalistic (as opposed to schematic) grammar and vocabulary, allowing those familiar with a Romance language, and educated speakers of English, to read and understand it without prior study.
Interlingua web pages include editions of
Wikipedia
Wikipedia is a free content, free Online content, online encyclopedia that is written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Founded by Jimmy Wales and La ...
and Wiktionary, and a number of periodicals, including ''
Panorama in Interlingua'' from the Union Mundial pro Interlingua (UMI).
Every two years, the UMI organizes an international conference in a different country. In the year between, the Scandinavian Interlingua societies co-organize a conference in Sweden, as a number of Interlingua speakers are in Scandinavia. National organizations such as the Union Brazilian pro Interlingua also organize regular conferences.
Interlingua is taught in some high schools and universities, sometimes as a means of teaching other languages quickly, presenting
interlinguistics, or introducing an international vocabulary. A two-week course was taught at the
University of Granada in
Spain
Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...
in 2007, for example.
,
Google Keyboard supports Interlingua.
Orthography
Interlingua has a largely
phonemic orthography.
Interlingua alphabet
Interlingua uses the 26 letters of the
ISO basic Latin alphabet
The ISO basic Latin alphabet is an international standard (beginning with ISO/IEC 646) for a Latin-script alphabet that consists of two sets (uppercase and lowercase) of 26 letters, codified in various national and international standards and u ...
with no
diacritic
A diacritic (also diacritical mark, diacritical point, diacritical sign, or accent) is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek (, "distinguishing"), from (, "to distinguish"). The word ''diacrit ...
s. The alphabet, pronunciation in
IPA and letter names in Interlingua are:
Collateral orthography
The book ''Grammar of Interlingua'' defines in §15 a "collateral orthography" that defines how a word is spelt in Interlingua once assimilated regardless of etymology.
Phonology
Interlingua is primarily a written language, and the pronunciation is not entirely settled. The sounds in parentheses are not used by all speakers.
Pronunciation
For the most part,
consonant
In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract, except for the h sound, which is pronounced without any stricture in the vocal tract. Examples are and pronou ...
s are pronounced as in English, while the
vowel
A vowel is a speech sound pronounced without any stricture in the vocal tract, forming the nucleus of a syllable. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness a ...
s are like Spanish. Written double consonants may be
geminated as in Italian for extra clarity or pronounced as single as in English or French. Interlingua has five falling
diphthong
A diphthong ( ), also known as a gliding vowel or a vowel glide, is a combination of two adjacent vowel sounds within the same syllable. Technically, a diphthong is a vowel with two different targets: that is, the tongue (and/or other parts of ...
s, , and , although and are rare.
Stress
The ''general rule'' is that stress falls on the vowel before the last consonant (e.g., , 'language', , 'to be', , 'requirement') ignoring the final plural (e.g. , the plural of , still has the same stress as the singular), and where that is not possible, on the first vowel (, 'way', , 'I create'). There are a few exceptions, and the following rules account for most of them:
* Adjectives and nouns ending in a vowel followed by , , or are stressed on the third-last syllable (, , 'other', but 'she imposes').
* Words ending in , and , are stressed on the third-last syllable (, , , , , 'century').
* Words ending in are stressed on the second-last syllable ().
Speakers may pronounce all words according to the general rule mentioned above. For example, is acceptable, although is more common.
Phonotactics
Interlingua has no explicitly defined
phonotactics
Phonotactics (from Ancient Greek 'voice, sound' and 'having to do with arranging') is a branch of phonology that deals with restrictions in a language on the permissible combinations of phonemes. Phonotactics defines permissible syllable struc ...
. However, the prototyping procedure for determining Interlingua words, which strives for internationality, should in general lead naturally to words that are easy for most learners to pronounce. In the process of forming new words, an ending cannot always be added without a modification of some kind in between. A good example is the plural ''-s'', which is always preceded by a vowel to prevent the occurrence of a hard-to-pronounce consonant cluster at the end. If the singular does not end in a vowel, the final ''-s'' becomes ''-es.''
Loanwords
Unassimilated foreign
loanword
A loanword (also a loan word, loan-word) is a word at least partly assimilated from one language (the donor language) into another language (the recipient or target language), through the process of borrowing. Borrowing is a metaphorical term t ...
s, or borrowed words, are spelled as in their language of origin. Their spelling may contain
diacritic
A diacritic (also diacritical mark, diacritical point, diacritical sign, or accent) is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek (, "distinguishing"), from (, "to distinguish"). The word ''diacrit ...
s, or accent marks. If the diacritics do not affect pronunciation, they are removed.
Vocabulary
The maintainers of Interlingua select words for it based on their presence and commonality in languages dubbed 'control' languages. These are
Spanish,
Portuguese,
Italian,
French, and
English, with
German and
Russian dubbed as secondary controls. An Interlingua word's origin can be from any language so long as it has spread to the control languages.. Spanish and Portuguese, both
West Iberian languages, are treated as one unit. The largest number of Interlingua words are of
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
origin, with the
Greek and
Germanic languages providing the second and third largest number. The remainder of the vocabulary originates in
Slavic languages
The Slavic languages, also known as the Slavonic languages, are Indo-European languages spoken primarily by the Slavs, Slavic peoples and their descendants. They are thought to descend from a proto-language called Proto-Slavic language, Proto- ...
and non-
Indo-European languages
The Indo-European languages are a language family native to the northern Indian subcontinent, most of Europe, and the Iranian plateau with additional native branches found in regions such as Sri Lanka, the Maldives, parts of Central Asia (e. ...
.
Eligibility
A word, that is a form with meaning, is eligible for the Interlingua vocabulary if it is verified by at least three of the four primary control languages. Either secondary control language can substitute for a primary language. Any word of Indo-European origin found in a control language can contribute to the eligibility of an international word. In some cases, the archaic or ''potential'' presence of a word can contribute to its eligibility.
A word can be potentially present in a language when a
derivative
In mathematics, the derivative is a fundamental tool that quantifies the sensitivity to change of a function's output with respect to its input. The derivative of a function of a single variable at a chosen input value, when it exists, is t ...
is present, but the word itself is not. English ''proximity'', for example, gives support to Interlingua , meaning 'near, close'. This counts as long as one or more control languages actually have this basic root word, which the Romance languages all do. Potentiality also occurs when a concept is represented as a
compound or derivative in a control language, the
morpheme
A morpheme is any of the smallest meaningful constituents within a linguistic expression and particularly within a word. Many words are themselves standalone morphemes, while other words contain multiple morphemes; in linguistic terminology, this ...
s that make it up are themselves international, and the combination adequately conveys the meaning of the larger word. An example is Italian (lit. 'flamebearer'), meaning 'match, lucifer', which leads to Interlingua , or 'match'. This word is thus said to be potentially present in the other languages although they may represent the meaning with a single morpheme.
Words do not enter the Interlingua vocabulary solely because
cognate
In historical linguistics, cognates or lexical cognates are sets of words that have been inherited in direct descent from an etymological ancestor in a common parent language.
Because language change can have radical effects on both the s ...
s exist in a sufficient number of languages. If
their meanings have become different over time, they are considered different words for the purpose of Interlingua eligibility. If they still have one or more meanings in common, however, the word can enter Interlingua with this smaller set of meanings.
If this procedure did not produce an international word, the word for a concept was originally taken from Latin (see below). This only occurred with a few
grammatical particle
In grammar, the term ''particle'' ( abbreviated ) has a traditional meaning, as a part of speech that cannot be inflected, and a modern meaning, as a function word (functor) associated with another word or phrase in order to impart meaning. Alth ...
s.
Form
The form of an Interlingua word is considered an ''international prototype'' with respect to the other words. On the one hand, it should be neutral, free from characteristics peculiar to one language. On the other hand, it should maximally capture the characteristics common to all contributing languages. As a result, it can be transformed into any of the contributing variants using only these language-specific characteristics. If the word has any derivatives that occur in the source languages with appropriate parallel meanings, then their
morphological connection must remain intact; for example, the Interlingua word for 'time' is spelled and not or in order to match it with its derived adjectives, such as .
The language-specific characteristics are closely related to the
sound laws of the individual languages; the resulting words are often close or even identical to the most recent form common to the contributing words. This sometimes corresponds with that of
Vulgar Latin
Vulgar Latin, also known as Colloquial, Popular, Spoken or Vernacular Latin, is the range of non-formal Register (sociolinguistics), registers of Latin spoken from the Crisis of the Roman Republic, Late Roman Republic onward. ''Vulgar Latin'' a ...
. At other times, it is much more recent or even contemporary. It is never older than the classical period.
An illustration
The French , Italian , Spanish , and Portuguese appear quite different, but they descend from a historical form . German , Dutch and English ''eye'' (cf. Czech and Polish , Russian and Ukrainian ()) are related to this form in that all three descend from
Proto-Indo-European
Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family. No direct record of Proto-Indo-European exists; its proposed features have been derived by linguistic reconstruction from documented Indo-Euro ...
'. In addition, international derivatives like ''ocular'' and occur in all of Interlingua's control languages. Each of these forms contributes to the eligibility of the Interlingua word. German and English base words do not influence the form of the Interlingua word, because their Indo-European connection is considered too remote. Instead, the remaining base words and especially the derivatives determine the form found in Interlingua.
Free word-building
Words can also be included in Interlingua by deriving them using Interlingua words and
affix
In linguistics, an affix is a morpheme that is attached to a word stem to form a new word or word form. The main two categories are Morphological derivation, derivational and inflectional affixes. Derivational affixes, such as ''un-'', ''-ation' ...
es; a method called free word-building. Thus, in the
Interlingua–English Dictionary (IED),
Alexander Gode followed the principle that every word listed is accompanied by all of its clear compounds and derivatives, along with the word or words it is derived from. A reader skimming through the IED notices many entries followed by large groups of derived and compound words. A good example is the Interlingua word , which is followed by , , , , , , , and many other words.
Other words in the IED do not have derivatives listed. Gode saw these words as potential word families. Although all derived words in the IED are found in at least one control language, speakers may make free use of Interlingua roots and affixes. For example, ('jade') can be used to form , ('to jadify, make into jade, make look like jade'), , and so on. These word forms would be impermissible in English but would be good Interlingua.
Word-building by analogy
Gode and Hugh E. Blair explained in the
Interlingua Grammar that the ''basic principle of practical word-building'' is analogical. If a pattern can be found in the existing international vocabulary, new words can be formed according to that pattern. A meaning of the suffix is 'person who practices the art or science of....' This suffix allows the derivation of from , from , and so on. An Interlingua speaker can freely form from and from by following the same pattern.
Usefulness and clarity
As noted above, the only limits to free word-building in Interlingua are ''clarity'' and ''usefulness''. These concepts are touched upon here:
Any number of words could be formed by stringing roots and affixes together, but some would be more useful than others. For example, the English word ''rainer'' means 'a person who rains', but most people would be surprised that it is included in English dictionaries. The corresponding Interlingua word is unlikely to appear in a dictionary because of its lack of utility. Interlingua, like any traditional language, ''could'' build up large numbers of these words, but this would be undesirable.
Gode stressed the principle of ''clarity'' in free word-building. As Gode noted, the noun ('mariner') can be formed from the adjective , because its meaning is clear. The noun meaning 'navy' cannot be formed, because its meaning would not be clear from the adjective and suffix that gave rise to it.
Grammar
Interlingua has been developed to omit any grammatical feature that is absent from any one primary control language. Thus, Interlingua has no
noun–adjective agreement by gender, case, or number (cf. Spanish and Portuguese or Italian , 'black female cats'), because this is absent from English, and it has no progressive verb tenses (English ''I am reading''), because they are absent from French. Conversely, Interlingua
distinguishes singular nouns from plural nouns because all the control languages do. With respect to the secondary control languages, Interlingua has articles, unlike Russian.
The definite article is invariable, as in English ("the"). Nouns have no
grammatical gender
In linguistics, a grammatical gender system is a specific form of a noun class system, where nouns are assigned to gender categories that are often not related to the real-world qualities of the entities denoted by those nouns. In languages wit ...
. Plurals are formed by adding ''-s'', or ''-es'' after a final consonant.
Personal pronouns take one form for the subject and one for the direct object and reflexive. In the third person, the reflexive is always ''se''. Most
adverb An adverb is a word or an expression that generally modifies a verb, an adjective, another adverb, a determiner, a clause, a preposition, or a sentence. Adverbs typically express manner, place, time, frequency, degree, or level of certainty by ...
s are derived regularly from
adjective
An adjective (abbreviations, abbreviated ) is a word that describes or defines a noun or noun phrase. Its semantic role is to change information given by the noun.
Traditionally, adjectives are considered one of the main part of speech, parts of ...
s by adding , or after a ''-c''. An adverb can be formed from any adjective in this way.
Verbs take the same form for all persons (, , , 'I live', 'you live', 'she lives'). The
indicative
A realis mood ( abbreviated ) is a grammatical mood which is used principally to indicate that something is a statement of fact; in other words, to express what the speaker considers to be a known state of affairs, as in declarative sentence
Dec ...
(, 'appear', 'appears') is the same as the
imperative ( 'appear!'), and there is no
subjunctive. Three common verbs usually take short forms in the present tense: for 'is', 'am', 'are;' for 'has', 'have;' and for 'go', 'goes'. A few irregular verb forms are available, but rarely used.
There are four simple tenses (present, past, future, and conditional), three compound tenses (past, future, and conditional), and the passive voice. The compound structures employ an auxiliary plus the infinitive or the past participle (e.g., , 'He has arrived'). Simple and compound tenses can be combined in various ways to express more complex tenses (e.g., , 'We would have died').
Word order is
subject–verb–object, except that a direct object pronoun or reflexive pronoun comes before the verb (, 'I see them'). Adjectives may precede or follow the nouns they modify, but they most often follow it. The position of adverbs is flexible, though constrained by common sense.
The grammar of Interlingua has been described as similar to that of the Romance languages, but simplified, primarily under the influence of English. A 1991 paper argued that Interlingua's grammar was similar to the simple grammars of Japanese and particularly Chinese.
F. P. Gopsill has written that Interlingua has no irregularities, although Gode's ''Interlingua Grammar'' suggests that Interlingua has a small number of irregularities.
Reception
One criticism that applies to naturalistic constructed languages in general is that if an educated traveler is willing to learn a naturalistic conlang, they may find it even more useful to learn a
natural language outright, such as
International English. Planned conlangs at least hold out the promise of "fixing" or standardizing certain irregular aspects of natural languages and providing unique advantages, despite the lack of speakers, but naturalistic conlangs have to compete with the natural languages they are based on. In practice, conferences with international attendance tend to be held in a natural language popular among the attendees rather than an
international auxiliary language
An international auxiliary language (sometimes acronymized as IAL or contracted as auxlang) is a language meant for communication between people from different nations, who do not share a common first language. An auxiliary language is primarily a ...
.
Samples
From an essay by Alexander Gode:
:
:Interlingua has detached itself from the movement for the development and introduction of a universal language for all humanity. Whether or not one believes that a language for all humanity is possible, whether or not one believes that Interlingua will become such a language is totally irrelevant from the point of view of Interlingua itself. The only fact that matters (from the point of view of Interlingua itself) is that Interlingua, thanks to its ambition of reflecting the cultural and thus linguistic homogeneity of the West, is capable of rendering tangible services at this precise moment in the history of the world. It is by its present contributions and not by the promises of its adherents that Interlingua wishes to be judged.
Flags and symbols
As with Esperanto, there have been proposals for a flag of Interlingua; the proposal by Czech translator Karel Podrazil is recognized by multilingual sites.
It consists of a white four-pointed star extending to the edges of the flag and dividing it into an upper blue and lower red half. The star is symbolic of the four cardinal directions, and the two halves symbolize Romance and non-Romance speakers of Interlingua who understand each other.
Another symbol of Interlingua is the ''
Blue Marble'' surrounded by twelve stars on a black or blue background, echoing the twelve stars of the
Flag of Europe (because the source languages of Interlingua are purely European).
File:Bandiera de Interlingua.png, Unofficial flag often appearing in the Interlingua-speaking community
File:Flag of Interlingua.svg, Unofficial flag of Interlingua proposed by Karel Podrazil
File:Interlingua2.png, Another possible flag of Interlingua
See also
; Theoretical framework
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Interlinguistics
; Comparisons with other languages
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Comparison between Esperanto and Interlingua
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Comparison between Ido and Interlingua
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Comparison between Interlingue and Interlingua
Interlingue and Interlingua are constructed international auxiliary languages.
Nomenclature
Interlingu- applies to three international auxiliary languages:
* Interlingua de Peano, published by the Italian mathematician Giuseppe Peano in 1903 an ...
; Other languages
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Esperanto
Esperanto (, ) is the world's most widely spoken Constructed language, constructed international auxiliary language. Created by L. L. Zamenhof in 1887 to be 'the International Language' (), it is intended to be a universal second language for ...
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Interslavic
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Ido
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Interlingue
Interlingue (; ISO 639 ''ie'', ''ile''), originally Occidental (), is an international auxiliary language created in 1922 and renamed in 1949. Its creator, Edgar de Wahl, sought to achieve maximal Grammaticality, grammatical regularity and Na ...
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Novial
; Publications
* ''
Grammatica de Interlingua''
* ''
Interlingua, Instrumento Moderne de Communication International'' (course manual)
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Interlingua dictionaries
; Vocabulary
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Classical compound
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Hybrid word
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Internationalism (linguistics)
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List of Greek and Latin roots in English
The English language uses many Greek and Latin roots, stems, and prefixes. These roots are listed alphabetically on three pages:
* Greek and Latin roots from A to G
* Greek and Latin roots from H to O
* Greek and Latin roots from P to Z.
Some ...
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Irregularities and exceptions in Interlingua
References
Bibliography
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External links
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Collection of links to Interlingua resourcesEnglish-Interlingua dictionary by Bryne
Word Building in ''A Grammar of Interlingua'' by
Alexander Gode and
Hugh E. Blair,
IALA, 1951.
Formation de parolas in Interlingua(PDF), by Ingvar Stenström, Swedish Society for Interlingua. (In Interlingua)
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Historia de Interlingua (video)
{{Authority control
International auxiliary languages
Constructed languages
Fusional languages
Constructed languages introduced in the 1950s
1951 introductions
Romance languages