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A constructed language (shortened to conlang) is a
language Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and signed language, signed forms, and may also be conveyed through writing syste ...
whose
phonology Phonology (formerly also phonemics or phonematics: "phonemics ''n.'' 'obsolescent''1. Any procedure for identifying the phonemes of a language from a corpus of data. 2. (formerly also phonematics) A former synonym for phonology, often pre ...
,
grammar In linguistics, grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, and words. The term may also refer to the study of such rul ...
,
orthography An orthography is a set of convention (norm), conventions for writing a language, including norms of spelling, punctuation, Word#Word boundaries, word boundaries, capitalization, hyphenation, and Emphasis (typography), emphasis. Most national ...
, and
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 ...
, instead of having developed naturally, are consciously devised for some purpose, which may include being devised for a work of fiction. A constructed language may also be referred to as an artificial, planned or invented language, or (in some cases) a
fictional language Fictional languages are the subset of constructed languages (conlangs) that have been created as part of a fictional setting (e.g. for use in a book, movie, television show, or video game). Typically they are the creation of one individual, while ...
. ''Planned languages'' (or engineered languages / engelangs) are languages that have been purposefully designed; they are the result of deliberate, controlling intervention and are thus of a form of ''
language planning In sociolinguistics, language planning (also known as language engineering) is a deliberate effort to influence the function, structure or acquisition of languages or language varieties within a speech community.Kaplan B., Robert, and Rich ...
''. There are many possible reasons to create a constructed language, such as to ease human
communication Communication is commonly defined as the transmission of information. Its precise definition is disputed and there are disagreements about whether Intention, unintentional or failed transmissions are included and whether communication not onl ...
(see
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 ...
and
code In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form, sometimes shortened or secret, for communication through a communicati ...
); to give
fiction Fiction is any creative work, chiefly any narrative work, portraying character (arts), individuals, events, or setting (narrative), places that are imagination, imaginary or in ways that are imaginary. Fictional portrayals are thus inconsistent ...
or an associated constructed setting an added layer of realism; for experimentation in the fields of
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 ...
,
cognitive science Cognitive science is the interdisciplinary, scientific study of the mind and its processes. It examines the nature, the tasks, and the functions of cognition (in a broad sense). Mental faculties of concern to cognitive scientists include percep ...
, and
machine learning Machine learning (ML) is a field of study in artificial intelligence concerned with the development and study of Computational statistics, statistical algorithms that can learn from data and generalise to unseen data, and thus perform Task ( ...
; for artistic creation; for fantasy
role-playing game A role-playing game (sometimes spelled roleplaying game, or abbreviated as RPG) is a game in which players assume the roles of player character, characters in a fictional Setting (narrative), setting. Players take responsibility for acting out ...
s; and for
language game A language game (also called a cant, secret language, ludling, or argot) is a system of manipulating spoken words to render them incomprehensible to an untrained listener. Language games are used primarily by groups attempting to conceal their ...
s. Some people may also make constructed languages as a
hobby A hobby is considered to be a regular activity that is done for enjoyment, typically during one's leisure time. Hobbies include collecting themed items and objects, engaging in creative and artistic pursuits, playing sports, or pursuing other ...
, or in connection to
worldbuilding Worldbuilding is the process of constructing an imaginary world or setting (narrative), setting, sometimes associated with a fictional universe. Developing the world with coherent qualities such as a history, geography, culture and ecology is a k ...
. The expression ''planned language'' is sometimes used to indicate international auxiliary languages and other languages designed for actual use in human communication. Some prefer it to the adjective ''artificial'', as this term may be perceived as pejorative. Outside
Esperanto culture Esperanto culture refers to the shared cultural experience of the Esperantujo, or Esperanto-speaking community. Despite being a constructed language, Esperanto has a history dating back to the late 19th century, and shared socio-cultural mores ha ...
, the term
language planning In sociolinguistics, language planning (also known as language engineering) is a deliberate effort to influence the function, structure or acquisition of languages or language varieties within a speech community.Kaplan B., Robert, and Rich ...
means the prescriptions given to a natural language to standardize it; in this regard, even a "natural language" may be artificial in some respects, meaning some of its words have been crafted by conscious decision. Prescriptive grammars, which date to ancient times for
classical language According to the definition by George L. Hart, a classical language is any language with an independent literary tradition and a large body of ancient written literature. Classical languages are usually extinct languages. Those that are still ...
s such as
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 ...
and
Sanskrit Sanskrit (; stem form ; nominal singular , ,) is a classical language belonging to the Indo-Aryan languages, Indo-Aryan branch of the Indo-European languages. It arose in northwest South Asia after its predecessor languages had Trans-cultural ...
, are rule-based codifications of natural languages, such codifications being a middle ground between naïve natural selection and development of language and its explicit construction. The term ''glossopoeia'' is also used to mean language construction, particularly construction of
artistic language An artistic language, or artlang, is a constructed language designed for aesthetic and phonetic pleasure. Constructed languages can be artistic to the extent that artists use it as a source of creativity in art, poetry, calligraphy or as a metapho ...
s.Sarah L. Higley: ''Hildegard of Bingen's Unknown Language''. Palgrave Macmillan, 2007. Conlang speakers are rare. For example, the Hungarian
census A census (from Latin ''censere'', 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given Statistical population, population, usually displayed in the form of stati ...
of 2011 found 8,397 speakers of
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 the census of 2001 found 10 of
Romanid Romanid is a zonal auxiliary language for speakers of Romance languages, intended to be understandable to them without prior study. It was created by the Hungarian language teacher Zoltán Magyar Zoltán Magyar (born 13 December 1953) is a ...
, two each of
Interlingua Interlingua (, ) is an international auxiliary language (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, ...
and
Ido Ido () is a constructed language derived from a reformed version of Esperanto, and designed similarly with the goal of being a universal second language for people of diverse languages. To function as an effective ''international auxiliary ...
and one each of
Idiom Neutral Idiom Neutral is an international auxiliary language, published in 1902 by the International Academy of the Universal Language () under the leadership of Waldemar Rosenberger, a St. Petersburg engineer. History The Academy had its origin a ...
and Mundolinco. The
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
n census of 2010 found that in Russia there were about 992 speakers of Esperanto (the 120th most common) and nine of the
Esperantido An Esperantido (plural Esperantidoj) is a constructed language derived from Esperanto. ''Esperantido'' originally referred to the language which is now known as Ido. The word ''Esperantido'' contains the affix (''-ido''), which means a "child (' ...
Ido Ido () is a constructed language derived from a reformed version of Esperanto, and designed similarly with the goal of being a universal second language for people of diverse languages. To function as an effective ''international auxiliary ...
.


Planned, constructed, artificial

The terms "planned", "constructed", "invented", "fictional", and "artificial" are used differently in some traditions. For example, few speakers of
Interlingua Interlingua (, ) is an international auxiliary language (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, ...
consider their language artificial, since they assert that it has no invented content: Interlingua's vocabulary is taken from a small set of natural languages, and its grammar is based closely on these source languages, even including some degree of irregularity; its proponents prefer to describe its vocabulary and grammar as standardized rather than artificial or constructed. Similarly,
Latino sine flexione Latino sine flexione ("Latin without inflections"), Interlingua de Academia pro Interlingua (IL de ApI) or Peano's Interlingua (abbreviated as IL) is an international auxiliary language compiled by the Academia pro Interlingua under the chairmansh ...
(LsF) is a simplification of Latin from which the
inflection In linguistic Morphology (linguistics), morphology, inflection (less commonly, inflexion) is a process of word formation in which a word is modified to express different grammatical category, grammatical categories such as grammatical tense, ...
s have been removed. As with Interlingua, some prefer to describe its development as "planning" rather than "constructing". Some speakers of
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
Esperantido An Esperantido (plural Esperantidoj) is a constructed language derived from Esperanto. ''Esperantido'' originally referred to the language which is now known as Ido. The word ''Esperantido'' contains the affix (''-ido''), which means a "child (' ...
s also avoid the term "artificial language" because they deny that there is anything "unnatural" about the use of their language in human communication. By contrast, some philosophers have argued that all human languages are conventional or artificial.
François Rabelais François Rabelais ( , ; ; born between 1483 and 1494; died 1553) was a French writer who has been called the first great French prose author. A Renaissance humanism, humanist of the French Renaissance and Greek scholars in the Renaissance, Gr ...
's fictional giant Pantagruel, for instance, said: "It is a misuse of terms to say that we have natural language; languages ''exist'' through arbitrary institutions and the conventions of peoples. Voices, as the dialecticians say, don't signify naturally, but capriciously." Furthermore, fictional or experimental languages can be considered ''naturalistic'' if they model real world languages. For example, if a naturalistic conlang is derived ''a posteriori'' from another language (real or constructed), it should imitate natural processes of
phonological Phonology (formerly also phonemics or phonematics: "phonemics ''n.'' 'obsolescent''1. Any procedure for identifying the phonemes of a language from a corpus of data. 2. (formerly also phonematics) A former synonym for phonology, often prefer ...
, lexical, and
grammatical In linguistics, grammaticality is determined by the conformity to language usage as derived by the grammar of a particular speech variety. The notion of grammaticality rose alongside the theory of generative grammar, the goal of which is to formu ...
change. In contrast with languages such as Interlingua, naturalistic fictional languages are not usually intended for easy learning or communication. Thus, naturalistic fictional languages tend to be more difficult and complex. While Interlingua has simpler grammar, syntax, and orthography than its source languages (though more complex and irregular than Esperanto or its descendants), naturalistic fictional languages typically mimic behaviors of natural languages like
irregular verbs A regular verb is any verb whose Verb conjugation, conjugation follows the typical pattern, or one of the typical patterns, of the language to which it belongs. A verb whose conjugation follows a different pattern is called an irregular verb. Th ...
and nouns, and complicated phonological processes.


Overview

In terms of purpose, most constructed languages can broadly be divided into: *''
Engineered language Engineered languages (often abbreviated to engelangs, or, less commonly, engilangs) are constructed languages devised to test or prove some hypotheses about how languages work or might work. There are at least three subcategories, philosophical ...
s'' (''engelangs''), further subdivided into logical languages (''loglangs''),
philosophical language A philosophical language is any constructed language that is constructed from first principles, sometimes following a classification. It is considered a type of engineered language. Philosophical languages were popular in Early Modern times, partl ...
s and experimental languages, devised for experimentation in
logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow from premises based on the structure o ...
,
philosophy Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
, or
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 ...
; *'' Auxiliary languages'' (''auxlangs'') or ''IALs'' (for ''International Auxiliary Languages''), devised for interlinguistic or international communication; *''
Artistic language An artistic language, or artlang, is a constructed language designed for aesthetic and phonetic pleasure. Constructed languages can be artistic to the extent that artists use it as a source of creativity in art, poetry, calligraphy or as a metapho ...
s'' (''artlangs''), devised to create aesthetic pleasure or humorous effect (''secret languages'' and ''mystical languages'' are also usually classified as artistic languages). The boundaries between these categories are by no means clear. A constructed language could easily fall into more than one of the above categories. A logical language created for
aesthetic Aesthetics (also spelled esthetics) is the branch of philosophy concerned with the nature of beauty and taste, which in a broad sense incorporates the philosophy of art.Slater, B. H.Aesthetics ''Internet Encyclopedia of Philosophy,'' , acces ...
reasons would also be classifiable as an artistic language; one created with philosophical motives could include being used as an auxiliary language. There are no rules, either inherent in the process of language construction or externally imposed, that would limit a constructed language to fitting only one of the above categories. A constructed language can have native speakers if young children learn it from parents who speak it fluently. According to ''
Ethnologue ''Ethnologue: Languages of the World'' 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 comprehensive catalogue of languages. It w ...
'', there are "200–2000 who speak Esperanto as a first language". A member of the Klingon Language Institute, d'Armond Speers, attempted to raise his son as a native (bilingual with English)
Klingon The Klingons ( ; Klingon language, Klingon: ''tlhIngan'' ) are a humanoid species of aliens in the science fiction franchise ''Star Trek''. Developed by screenwriter Gene L. Coon in 1967 for the Star Trek: The Original Series, original ''Star T ...
speaker. As soon as a constructed language has a community of fluent speakers, especially if it has numerous native speakers, it begins to evolve and hence loses its constructed status. For example,
Modern Hebrew Modern Hebrew (, or ), also known as Israeli Hebrew or simply Hebrew, is the Standard language, standard form of the Hebrew language spoken today. It is the only surviving Canaanite language, as well as one of the List of languages by first w ...
and its pronunciation norms were developed from existing traditions of
Hebrew Hebrew (; ''ʿÎbrit'') is a Northwest Semitic languages, Northwest Semitic language within the Afroasiatic languages, Afroasiatic language family. A regional dialect of the Canaanite languages, it was natively spoken by the Israelites and ...
, such as
Mishnaic Hebrew Mishnaic Hebrew () is the Hebrew language used in Talmudic texts. Mishnaic Hebrew can be sub-divided into Mishnaic Hebrew proper (c. 1–200 CE, also called Tannaim, Tannaitic Hebrew, Early Rabbinic Hebrew, or Mishnah, Mishnaic Hebrew I), which w ...
and
Biblical Hebrew Biblical Hebrew ( or ), also called Classical Hebrew, is an archaic form of the Hebrew language, a language in the Canaanite languages, Canaanitic branch of the Semitic languages spoken by the Israelites in the area known as the Land of Isra ...
following a general
Sephardic Sephardic Jews, also known as Sephardi Jews or Sephardim, and rarely as Iberian Peninsular Jews, are a Jewish diaspora population associated with the historic Jewish communities of the Iberian Peninsula (Spain and Portugal) and their descendant ...
pronunciation, rather than engineered from scratch, and has undergone considerable changes since the state of
Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...
was founded in 1948 (Hetzron 1990:693). However, linguist
Ghil'ad Zuckermann Ghil'ad Zuckermann (, ; ) is an Israeli-born language revivalist and linguist who works in contact linguistics, lexicology and the study of language, culture and identity. Zuckermann was awarded the Rubinlicht Prize (2023) "for his researc ...
argues that Modern Hebrew, which he terms "Israeli", is a Semito-European hybrid based not only on Hebrew but also on
Yiddish Yiddish, historically Judeo-German, is a West Germanic language historically spoken by Ashkenazi Jews. It originated in 9th-century Central Europe, and provided the nascent Ashkenazi community with a vernacular based on High German fused with ...
and other languages spoken by revivalists. Zuckermann therefore endorses the translation of the Hebrew Bible into what he calls "Israeli".
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 ...
as a living spoken language has evolved significantly from the prescriptive blueprint published in 1887, so that modern editions of the ''Fundamenta Krestomatio'', a 1903 collection of early texts in the language, require many footnotes on the syntactic and lexical differences between early and modern Esperanto. Proponents of constructed languages often have many reasons for using them. The famous but disputed Sapir–Whorf hypothesis is sometimes cited; this claims that the language one speaks influences the way one thinks. Thus, a "better" language should allow the speaker to think more clearly or intelligently or to encompass more points of view; this was the intention of Suzette Haden Elgin in creating Láadan, a feminist language embodied in her feminist science fiction series '' Native Tongue''. Constructed languages have been included in
standardized test A standardized test is a Test (assessment), test that is administered and scored in a consistent or standard manner. Standardized tests are designed in such a way that the questions and interpretations are consistent and are administered and scored ...
s such as the
SAT The SAT ( ) is a standardized test widely used for college admissions in the United States. Since its debut in 1926, its name and Test score, scoring have changed several times. For much of its history, it was called the Scholastic Aptitude Test ...
, where they were used to test the applicant's ability to infer and apply grammatical rules. By the same token, a constructed language might also be used to ''restrict'' thought, as in
George Orwell Eric Arthur Blair (25 June 1903 – 21 January 1950) was an English novelist, poet, essayist, journalist, and critic who wrote under the pen name of George Orwell. His work is characterised by lucid prose, social criticism, opposition to a ...
's
Newspeak In the dystopian novel '' Nineteen Eighty-Four'' (also published as ''1984''), by George Orwell, Newspeak is the fictional language of Oceania, a totalitarian superstate. To meet the ideological requirements of Ingsoc (English Socialism) in O ...
, or to ''simplify'' thought, as in
Toki Pona Toki Pona (; , , translated as 'the language of good') is a Philosophical language, philosophical, Artistic language, artistic, constructed language designed for its small vocabulary, simplicity, and ease of acquisition. It was created by Canadia ...
. However, linguists such as
Steven Pinker Steven Arthur Pinker (born September 18, 1954) is a Canadian-American cognitive psychology, cognitive psychologist, psycholinguistics, psycholinguist, popular science author, and public intellectual. He is an advocate of evolutionary psycholo ...
argue that ideas exist independently of language. For example, in the book ''
The Language Instinct ''The Language Instinct: How the Mind Creates Language'' is a 1994 book by Steven Pinker, written for a general audience. Pinker argues that humans are born with an innate capacity for language. He deals sympathetically with Noam Chomsky's claim t ...
'', Pinker states that children spontaneously re-invent slang and even grammar with each generation. These linguists argue that attempts to control the range of human thought through the reform of language would fail, as concepts like "freedom" will reappear in new words if the old words vanish. Proponents claim a particular language makes it easier to express and understand concepts in one area, and more difficult in others. An example can be taken from the way various
programming language A programming language is a system of notation for writing computer programs. Programming languages are described in terms of their Syntax (programming languages), syntax (form) and semantics (computer science), semantics (meaning), usually def ...
s make it easier to write certain kinds of programs and harder to write others. Another reason cited for using a constructed language is the telescope rule, which claims that it takes less time to first learn a simple constructed language and then a natural language, than to learn only a natural language. Thus, if someone wants to learn English, some suggest learning
Basic English Basic English (a backronym for British American Scientific International and Commercial English) is a controlled language based on standard English, but with a greatly simplified vocabulary and grammar. It was created by the linguist and philo ...
first. Constructed languages like Esperanto and Interlingua are in fact often simpler due to the typical lack of
irregular verbs A regular verb is any verb whose Verb conjugation, conjugation follows the typical pattern, or one of the typical patterns, of the language to which it belongs. A verb whose conjugation follows a different pattern is called an irregular verb. Th ...
and other grammatical quirks. Some studies have found that learning Esperanto helps in learning a non-constructed language later (see propaedeutic value of Esperanto). Codes for constructed languages include the
ISO 639-2 ISO 639-2:1998, ''Codes for the representation of names of languages — Part 2: Alpha-3 code'', is the second part of the ISO 639 International standard, standard, which lists Language code, codes for the representation of the names of languages ...
"
art Art is a diverse range of cultural activity centered around ''works'' utilizing creative or imaginative talents, which are expected to evoke a worthwhile experience, generally through an expression of emotional power, conceptual ideas, tec ...
" for conlangs; however, some constructed languages have their own
ISO 639 ISO 639 is a international standard, standard by the International Organization for Standardization (ISO) concerned with representation of languages and language groups. It currently consists of four sets (1-3, 5) of code, named after each part w ...
language codes (e.g. "eo" and "epo" for
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 ...
, "jbo" for
Lojban Lojban (pronounced ) is a Logical language, logical, constructed language, constructed, human language created by the Logical Language Group which aims to be Syntactic ambiguity, syntactically unambiguous. It succeeds the Loglan project. The Log ...
, "ia" and "ina" for
Interlingua Interlingua (, ) is an international auxiliary language (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, ...
, "tlh" for
Klingon The Klingons ( ; Klingon language, Klingon: ''tlhIngan'' ) are a humanoid species of aliens in the science fiction franchise ''Star Trek''. Developed by screenwriter Gene L. Coon in 1967 for the Star Trek: The Original Series, original ''Star T ...
, "io" and "ido" for
Ido Ido () is a constructed language derived from a reformed version of Esperanto, and designed similarly with the goal of being a universal second language for people of diverse languages. To function as an effective ''international auxiliary ...
, "lfn" for
Lingua Franca Nova Lingua Franca Nova (), abbreviated as LFN and known colloquially as Elefen, is a constructed international auxiliary language originally created by C. George Boeree of Shippensburg University, Pennsylvania, and further developed by many of its ...
, and "tok" for
Toki Pona Toki Pona (; , , translated as 'the language of good') is a Philosophical language, philosophical, Artistic language, artistic, constructed language designed for its small vocabulary, simplicity, and ease of acquisition. It was created by Canadia ...
). One constraint on a constructed language is that if it was constructed to be a natural language for use by fictional foreigners or aliens, as with Dothraki and High Valyrian in the ''
Game of Thrones ''Game of Thrones'' is an American Fantasy television, fantasy Drama (film and television), drama television series created by David Benioff and for HBO. It is an adaptation of ''A Song of Ice and Fire'', a series of high fantasy novels by ...
'' series, which was adapted from the ''
A Song of Ice and Fire ''A Song of Ice and Fire'' is a series of high fantasy novels by the American author George R. R. Martin. Martin began writing the first volume, ''A Game of Thrones'', in 1991, and published it in 1996. Martin, who originally envisioned the ser ...
'' book series, the language should be easily pronounced by actors, and should fit with and incorporate any fragments of the language already invented by the book's author, and preferably also fit with any personal names of fictional speakers of the language.


''A priori'' and ''a posteriori'' languages

An ''a priori'' (from
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 ...
''
a priori ('from the earlier') and ('from the later') are Latin phrases used in philosophy to distinguish types of knowledge, Justification (epistemology), justification, or argument by their reliance on experience. knowledge is independent from any ...
'', "from the former") constructed language is one whose features (including vocabulary, grammar, etc.) are not based on an existing language, and an ''a posteriori'' language is the opposite. This categorization, however, is not absolute, as many constructed languages may be called ''a priori'' when considering some linguistic factors, and at the same time ''a posteriori'' when considering other factors.


''A priori'' language

An ''a priori'' language is any constructed language with some features which are not based on existing languages. Instead these features are invented or elaborated to work differently or to allude to different purposes. Some ''a priori'' languages are designed to be
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 ...
s that remove what could be considered an unfair learning advantage for native speakers of a source language that would otherwise exist for ''a posteriori'' languages. Others, known as
philosophical Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
or taxonomic languages, try to categorize their vocabulary, either to express an underlying philosophy or to make it easier to recognize new vocabulary. Finally, many artistic languages, created for either personal use or for use in a fictional medium, employ consciously constructed grammars and vocabularies, and are best understood as ''a priori''.


Examples of ''a priori'' languages


=''A priori'' international auxiliary languages

= *
Balaibalan Balaibalan () is the oldest known constructed language. History Balaibalan is the only well-documented early constructed language that is not of European origin, and it is independent of the fashion for language construction that occurred in ...
, attributed to
Fazlallah Astarabadi Fażlu l-Lāh Astar-Ābādī (, 1339/40 in Astarābād – 1394 in Nakhchivan), also known as Fażlullāh Tabrīzī AstarābādīIrène Mélikoff. ''Hadji Bektach: un mythe et ses avatars : genèse et évolution du soufisme populaire en Turquie' ...
or Muhyi Gulshani (14th century) *
Solresol Solresol (Solfège: G (musical note), Sol-D (musical note), Re-G (musical note), Sol), originally called Langue universelle and then Langue musicale universelle, is a Musical language, musical constructed language devised by François Sudre, beg ...
by François Sudre (1827) * Ro by Edward Foster (1906) * Sona by Kenneth Searight (1935) * Babm by Rikichi Okamoto (1962) * aUI by W. John Weilgart (1962) * Mirad (aka Unilingua) by Noubar Agopoff (1966) * Kotava by Staren Fetcey (1978)


=Experimental languages

= * Láadan by Suzette Haden Elgin (1982) *
Ithkuil Ithkuil is an experimental language, experimental constructed language created by John Quijada. It is designed to express more profound levels of human cognition briefly yet overtly and clearly, particularly about human categorization. It is a cr ...
by John Quijada (2004)


=''A priori'' artistic languages

= *
Quenya Quenya ()Tolkien wrote in his "Outline of Phonology" (in '' Parma Eldalamberon'' 19, p. 74) dedicated to the phonology of Quenya: is "a sound as in English ''new''". In Quenya is a combination of consonants, ibidem., p. 81. is a constructed l ...
and
Sindarin Sindarin is one of Languages constructed by J. R. R. Tolkien, the constructed languages devised by J. R. R. Tolkien for use in his fantasy stories set in Arda (Tolkien), Arda, primarily in Middle-earth. Sindarin is one of the many languages spoke ...
by
J. R. R. Tolkien John Ronald Reuel Tolkien (, 3 January 1892 – 2 September 1973) was an English writer and philologist. He was the author of the high fantasy works ''The Hobbit'' and ''The Lord of the Rings''. From 1925 to 1945, Tolkien was the Rawlinson ...
for ''
The Lord of the Rings ''The Lord of the Rings'' is an Epic (genre), epic high fantasy novel written by English author and scholar J. R. R. Tolkien. Set in Middle-earth, the story began as a sequel to Tolkien's 1937 children's book ''The Hobbit'' but eventually d ...
'' (published 1954) *
Klingon The Klingons ( ; Klingon language, Klingon: ''tlhIngan'' ) are a humanoid species of aliens in the science fiction franchise ''Star Trek''. Developed by screenwriter Gene L. Coon in 1967 for the Star Trek: The Original Series, original ''Star T ...
by
Marc Okrand Marc Okrand (; born July 3, 1948) is an American linguist. His professional work is in Native American languages, and he is well known as the creator of the Klingon language in the ''Star Trek'' science fiction franchise. Career As a linguist, ...
for the science-fiction franchise ''
Star Trek ''Star Trek'' is an American science fiction media franchise created by Gene Roddenberry, which began with the Star Trek: The Original Series, series of the same name and became a worldwide Popular culture, pop-culture Cultural influence of ...
'' (1985) * Kēlen by Sylvia Sotomayor (1998) * Naʼvi by Paul Frommer for the movie ''
Avatar Avatar (, ; ) is a concept within Hinduism that in Sanskrit literally means . It signifies the material appearance or incarnation of a powerful deity, or spirit on Earth. The relative verb to "alight, to make one's appearance" is sometimes u ...
'' (2009) * Dothraki and Valyrian by
David Peterson David Robert Peterson (born December 28, 1943) is a Canadian lawyer and former politician who served as the 20th premier of Ontario from 1985 to 1990. He was the first Liberal officeholder in 42 years, ending the so-called Tory dynasty. Back ...
for the television series ''
Game of Thrones ''Game of Thrones'' is an American Fantasy television, fantasy Drama (film and television), drama television series created by David Benioff and for HBO. It is an adaptation of ''A Song of Ice and Fire'', a series of high fantasy novels by ...
'' (2011) * Kiliki by
Madhan Karky Madhan Karky Vairamuthu is an Indian lyricist, screenwriter, research associate, software engineer, and entrepreneur. A holder of a doctorate in computer science from the University of Queensland, Karky began his professional career as an as ...
for the '' Baahubali'' films (2015)


=Community languages

= *
Damin Damin ( in the practical orthography of Lardil) was a ceremonial language register used by the advanced initiated men of the aboriginal Lardil ( in the practical orthography) and Yangkaal peoples of northern Australia. Both inhabit island ...
( Yangkaal and Lardil people, 19th century or earlier) * Eskayan ( Eskaya, ) * Medefaidrin ( Ibibio, 1930s) *
Palawa kani Palawa kani is a constructed language created by the Tasmanian Aboriginal Centre as a composite Tasmanian languages, Tasmanian language, based on reconstructed vocabulary from the limited accounts of the various languages once spoken by the Abo ...
( Palawa, 1990s)


''A posteriori'' language

An ''a posteriori'' language (from
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 ...
''a posteriori'', "from the latter"), according to French linguist
Louis Couturat Louis Couturat (; 17 January 1868 – 3 August 1914) was a French logician, mathematician, philosopher, and linguist. Couturat was a pioneer of the constructed language Ido. Life and education Born in Paris. In 1887 he entered École Normale S ...
, is any constructed language whose elements are borrowed from or based on existing languages. The term can also be extended to controlled versions of natural languages, and is most commonly used to refer to vocabulary despite other features. Likewise, zonal auxiliary languages (auxiliary languages for speakers of a particular language family) are ''a posteriori'' by definition. While most auxiliary languages are ''a posteriori'' due to their intended function as a medium of communication, many artistic languages are fully ''a posteriori'' in design—many for the purposes of
alternate history Alternate history (also referred to as alternative history, allohistory, althist, or simply A.H.) is a subgenre of speculative fiction in which one or more historical events have occurred but are resolved differently than in actual history. As ...
. In distinguishing whether the language is ''a priori'' or ''a posteriori'', the prevalence and distribution of respectable traits is often the key.


Examples of ''a posteriori'' languages


=''A posteriori'' artistic languages

= * Brithenig by Andrew Smith (1996) * Atlantean language, Atlantean by
Marc Okrand Marc Okrand (; born July 3, 1948) is an American linguist. His professional work is in Native American languages, and he is well known as the creator of the Klingon language in the ''Star Trek'' science fiction franchise. Career As a linguist, ...
for the film ''Atlantis: The Lost Empire'' (2001) *
Toki Pona Toki Pona (; , , translated as 'the language of good') is a Philosophical language, philosophical, Artistic language, artistic, constructed language designed for its small vocabulary, simplicity, and ease of acquisition. It was created by Canadia ...
by Sonja Lang (2001) * Wenedyk by Jan van Steenbergen (2002) * Trigedasleng by
David Peterson David Robert Peterson (born December 28, 1943) is a Canadian lawyer and former politician who served as the 20th premier of Ontario from 1985 to 1990. He was the first Liberal officeholder in 42 years, ending the so-called Tory dynasty. Back ...
for the TV series ''The 100 (TV series), The 100'' (2014) * Nagwai by Naxikeestan (2023)


=Controlled auxiliary languages

= *
Latino sine flexione Latino sine flexione ("Latin without inflections"), Interlingua de Academia pro Interlingua (IL de ApI) or Peano's Interlingua (abbreviated as IL) is an international auxiliary language compiled by the Academia pro Interlingua under the chairmansh ...
(Latin, 1911) *
Basic English Basic English (a backronym for British American Scientific International and Commercial English) is a controlled language based on standard English, but with a greatly simplified vocabulary and grammar. It was created by the linguist and philo ...
(English, 1925) * N'Ko language, N'Ko (Manding, 1949) * Special English, Learning English (English, 1959) * Kitara language, Kitara (SW Ugandan Bantu, 1990) * Globish (Nerrière), Globish (English, 2004)


=''A posteriori'' international auxiliary languages

= * (1868) Universalglot * (1879) Volapük * (1885) Pasilingua * (1887)
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 ...
* (1888) Mundolinco * (1902)
Idiom Neutral Idiom Neutral is an international auxiliary language, published in 1902 by the International Academy of the Universal Language () under the leadership of Waldemar Rosenberger, a St. Petersburg engineer. History The Academy had its origin a ...
* (1907)
Ido Ido () is a constructed language derived from a reformed version of Esperanto, and designed similarly with the goal of being a universal second language for people of diverse languages. To function as an effective ''international auxiliary ...
* (1912) Reform-Neutral * (1922) Interlingue * (1928) Novial * (1937) Esperanto II * () Mondial language, Mondial * (1951)
Interlingua Interlingua (, ) is an international auxiliary language (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, ...
* (1961) Neo language, Neo * (1970) Afrihili * () Glosa * (1986) Uropi * (1991) Romániço * (1998)
Lingua Franca Nova Lingua Franca Nova (), abbreviated as LFN and known colloquially as Elefen, is a constructed international auxiliary language originally created by C. George Boeree of Shippensburg University, Pennsylvania, and further developed by many of its ...
* (2007) Sambahsa * (2010) Lingwa de planeta


=Zonal auxiliary languages

= * Efatese language, Efatese (c. Vanuatu Oceanic, 19th century) *
Romanid Romanid is a zonal auxiliary language for speakers of Romance languages, intended to be understandable to them without prior study. It was created by the Hungarian language teacher Zoltán Magyar Zoltán Magyar (born 13 December 1953) is a ...
(Romance, 1956) *
Palawa kani Palawa kani is a constructed language created by the Tasmanian Aboriginal Centre as a composite Tasmanian languages, Tasmanian language, based on reconstructed vocabulary from the limited accounts of the various languages once spoken by the Abo ...
(Aboriginal Australian, 1992) * Folkspraak (Germanic, 1995) * Budinos (Finno-Ugric, 2000s) * Neolatino Romance (Romance, 2006) * Interslavic (Slavic, 2011)


History


Ancient linguistic experiments

Grammatical speculation dates from Classical Antiquity; for instance, it appears in Plato's ''Cratylus (dialogue), Cratylus'' in Hermogenes's contention that words are not inherently linked to what they refer to; that people apply "a piece of their own voice ... to the thing". Athenaeus tells the story of two figures: Dionysius of Sicily and Alexarchus of Macedon, Alexarchus: * Dionysius of Sicily created neologisms like ''menandros'' "virgin" (from ''menei'' "waiting" and ''andra'' "husband") for standard Greek ''parthenos''; ''menekratēs'' "pillar" (from ''menei'' "it remains in one place" and ''kratei'' "it is strong") for standard ''stulos''; and ''ballantion'' "javelin" (from ''balletai enantion'' "thrown against someone") for standard ''akon''. * Alexarchus of Macedon, the brother of King Cassander of Macedon, was the founder of the city of Ouranopolis. Athenaeus recounts a story told by Heraclides Lembus, Heraclides of Lembos that Alexarchus "introduced a peculiar vocabulary, referring to a rooster as a "dawn-crier", a barber as a "mortal-shaver", a drachma as "worked silver", ... and a herald as an ''aputēs'' [from ''ēputa'' "loud-voiced"]. "He [Alexarchus] once wrote something ... to the public authorities in Casandreia... As for what this letter says, in my opinion not even the Apollo, Pythian god could make sense of it." While the mechanisms of grammar suggested by classical philosophers were designed to explain existing languages (
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 ...
, Greek language, Greek, and
Sanskrit Sanskrit (; stem form ; nominal singular , ,) is a classical language belonging to the Indo-Aryan languages, Indo-Aryan branch of the Indo-European languages. It arose in northwest South Asia after its predecessor languages had Trans-cultural ...
), they were not used to construct new grammars. Roughly contemporary to Plato, in his descriptive grammar of Sanskrit, Pāṇini constructed a set of rules for explaining language, so that the text of his grammar may be considered a mixture of natural and constructed language.


Early constructed languages

A legend recorded in the seventh-century Irish language, Irish work Auraicept na n-Éces claims that Fénius Farsaid visited Shinar after the confusion of tongues, and he and his scholars studied the various languages for ten years, taking the best features of each to create ''in Bérla tóbaide'' ("the selected language"), which he named Old Irish, ''Goídelc''—the Irish language. This appears to be the first mention of the concept of a constructed language in literature. The earliest non-natural languages were considered less "constructed" than "super-natural", mystical, or divinely inspired. The Lingua Ignota, recorded in the 12th century by St. Hildegard of Bingen, is an example, and apparently the first entirely artificial language.Joshua Foer
"John Quijada and Ithkuil, the Language He Invented"
''The New Yorker'', 24 December 2012.
It is a form of private mystical cant (language), cant (see also Enochian). An important example from Middle-Eastern culture is
Balaibalan Balaibalan () is the oldest known constructed language. History Balaibalan is the only well-documented early constructed language that is not of European origin, and it is independent of the fashion for language construction that occurred in ...
, invented in the 16th century. Kabbalah, Kabbalistic grammatical speculation was directed at recovering the original language spoken by Adam and Eve in Paradise, lost in the confusion of tongues. The first Christians, Christian project for an ideal language is outlined in Dante Alighieri's ''De vulgari eloquentia'', where he searches for the ideal Italian language, Italian vernacular suited for literature. Ramon Llull's ''Ramon Llull#Llull's Art (Ars Magna), Ars Magna'' was a project of a perfect language with which the infidels could be convinced of the truth of the Christian faith. It was basically an application of combinatorics on a given set of concepts. During the Renaissance, Lullian and Kabbalistic ideas were drawn upon in a magical context, resulting in cryptography, cryptographic applications.


Perfecting language

Renaissance interest in Ancient Egypt, notably the discovery of the ''Hieroglyphica'' of Horapollo, and first encounters with the Chinese script directed efforts towards a perfect written language. Johannes Trithemius, in ''Steganographia'' and ''Polygraphia'', attempted to show how all languages can be reduced to one. In the 17th century, interest in Magical thinking, magical languages was continued by the Rosicrucians and alchemists (like John Dee (mathematician), John Dee and his Enochian). Jakob Boehme in 1623 spoke of a "natural language" (''Natursprache'') of the senses. Musical languages from the Renaissance were often tied up with mysticism, magic and alchemy, sometimes also referred to as the language of the birds. A non-mystic musical language was
Solresol Solresol (Solfège: G (musical note), Sol-D (musical note), Re-G (musical note), Sol), originally called Langue universelle and then Langue musicale universelle, is a Musical language, musical constructed language devised by François Sudre, beg ...
.


17th and 18th century: advent of philosophical languages

The 17th century saw the rise of projects for "philosophical" or "a priori" languages, such as: *Francis Lodwick's ''A Common Writing'' (1647) and ''The Groundwork or Foundation laid (or So Intended) for the Framing of a New Perfect Language and a Universal Common Writing'' (1652) * Sir Thomas Urquhart's ''Ekskybalauron'' (1651) and ''Logopandecteision'' (1652) * George Dalgarno's ''Ars signorum'', 1661 * John Wilkins' ''An Essay towards a Real Character, and a Philosophical Language'', 1668 These early taxonomic conlangs produced systems of hierarchical classification that were intended to result in both spoken and written expression. Gottfried Leibniz, Leibniz had a similar purpose for his ''lingua generalis'' of 1678, aiming at a lexicon of characters upon which the user might perform calculations that would yield true propositions automatically, as a side-effect developing binary combinatory logic, binary calculus. These projects were not only occupied with reducing or modelling grammar, but also with the arrangement of all human knowledge into "characters" or hierarchies, an idea that with the Age of Enlightenment, Enlightenment would ultimately lead to the ''Encyclopédie''. Many of these 17th–18th centuries conlangs were Pasigraphy, pasigraphies, or purely written languages with no spoken form or a spoken form that would vary greatly according to the native language of the reader.Leopold Einstein, "Al la historio de la Provoj de Lingvoj Tutmondaj de Leibnitz ĝis la Nuna Tempo", 1884. Reprinted in ''Fundamenta Krestomatio'', UEA 1992 [1903]. Leibniz and the encyclopedists realized that it is impossible to organize human knowledge unequivocally in a tree diagram, and consequently to construct an ''a priori'' language based on such a classification of concepts. Under the entry ''Charactère'', D'Alembert critically reviewed the projects of philosophical languages of the preceding century. After the ''Encyclopédie'', projects for ''a priori'' languages moved more and more to the lunatic fringe. Individual authors, typically unaware of the history of the idea, continued to propose taxonomic philosophical languages until the early 20th century (e.g. Ro (language), Ro), but most recent engineered languages have had more modest goals; some are limited to a specific field, like mathematical formalism or calculus (e.g. Lincos (artificial language), Lincos and
programming language A programming language is a system of notation for writing computer programs. Programming languages are described in terms of their Syntax (programming languages), syntax (form) and semantics (computer science), semantics (meaning), usually def ...
s), others are designed for eliminating syntactical ambiguity (e.g., Loglan and
Lojban Lojban (pronounced ) is a Logical language, logical, constructed language, constructed, human language created by the Logical Language Group which aims to be Syntactic ambiguity, syntactically unambiguous. It succeeds the Loglan project. The Log ...
) or maximizing conciseness (e.g.,
Ithkuil Ithkuil is an experimental language, experimental constructed language created by John Quijada. It is designed to express more profound levels of human cognition briefly yet overtly and clearly, particularly about human categorization. It is a cr ...
).


19th and 20th centuries: auxiliary languages

Already in the ''Encyclopédie'' attention began to focus on ''a posteriori'' auxiliary languages. Joachim Faiguet de Villeneuve in the article on ''Langue'' wrote a short proposition of a "laconic" or regularized grammar of French (language), French. During the 19th century, a bewildering variety of such International Auxiliary Languages (IALs) were proposed, so that
Louis Couturat Louis Couturat (; 17 January 1868 – 3 August 1914) was a French logician, mathematician, philosopher, and linguist. Couturat was a pioneer of the constructed language Ido. Life and education Born in Paris. In 1887 he entered École Normale S ...
and Léopold Leau in ''Histoire de la langue universelle'' (1903) reviewed 38 projects. The first of these that made any international impact was Volapük, proposed in 1879 by Johann Martin Schleyer; within a decade, 283 Volapükist clubs were counted all over the globe. However, disagreements between Schleyer and some prominent users of the language led to schism, and by the mid-1890s it fell into obscurity, making way for
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 ...
, proposed in 1887 by L. L. Zamenhof, and its Esperantido, descendants.
Interlingua Interlingua (, ) is an international auxiliary language (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, ...
, the most recent auxlang to gain a significant number of speakers, emerged in 1951, when the International Auxiliary Language Association published its Interlingua–English Dictionary and an accompanying Interlingua: A Grammar of the International Language, grammar. The success of Esperanto did not stop others from trying to construct new auxiliary languages, such as Leslie Jones' Eurolengo, which mixes elements of English and Spanish. Loglan (1955) and its descendants constitute a pragmatic return to the aims of the ''a priori'' languages, tempered by the requirement of usability of an auxiliary language. Thus far, these modern ''a priori'' languages have garnered only small groups of speakers. Robot Interaction Language (2010) is a spoken language that is optimized for communication between machines and humans. The major goals of ROILA are that it should be easily learnable by the human user, and optimized for efficient recognition by computer speech recognition algorithms.


Artlangs

Artists may use language as a source of creativity in art, poetry, or calligraphy, or as a metaphor to address themes as cultural diversity and the vulnerability of the individual in a globalized world. Some people prefer however to take pleasure in constructing, crafting a language by a conscious decision for reasons of literary enjoyment or aesthetic reasons without any claim of usefulness. Such
artistic language An artistic language, or artlang, is a constructed language designed for aesthetic and phonetic pleasure. Constructed languages can be artistic to the extent that artists use it as a source of creativity in art, poetry, calligraphy or as a metapho ...
s begin to appear in Early modern period, Early Modern literature (in Gargantua and Pantagruel, Pantagruel, and in Utopian contexts), but they only seem to gain notability as serious projects beginning in the 20th century. ''A Princess of Mars'' (1912) by Edgar Rice Burroughs was possibly the first fiction of that century to feature a constructed language. J. R. R. Tolkien developed families of related fictional languages and discussed artistic languages publicly, giving a lecture entitled "''A Secret Vice''" in 1931 at a congress. (Orwell's Newspeak is considered a satire of 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 ...
rather than an artistic language proper.) By the beginning of the first decade of the 21st century, it had become common for Speculative fiction, science fiction and fantasy works set in other worlds to feature constructed languages, or more commonly, an extremely limited but defined vocabulary which ''suggests'' the existence of a complete language, or whatever portions of the language are needed for the story. Constructed languages are a regular part of the genre, appearing in ''Star Wars'', ''
Star Trek ''Star Trek'' is an American science fiction media franchise created by Gene Roddenberry, which began with the Star Trek: The Original Series, series of the same name and became a worldwide Popular culture, pop-culture Cultural influence of ...
'', ''
The Lord of the Rings ''The Lord of the Rings'' is an Epic (genre), epic high fantasy novel written by English author and scholar J. R. R. Tolkien. Set in Middle-earth, the story began as a sequel to Tolkien's 1937 children's book ''The Hobbit'' but eventually d ...
'' (Elvish languages (Middle-earth), Elvish), ''Stargate SG-1'', ''Atlantis: The Lost Empire, Ar Tonelico'' (Ar Tonelico#Hymmnos, Hymmnos), ''
Game of Thrones ''Game of Thrones'' is an American Fantasy television, fantasy Drama (film and television), drama television series created by David Benioff and for HBO. It is an adaptation of ''A Song of Ice and Fire'', a series of high fantasy novels by ...
'' (Dothraki language and Valyrian languages), ''The Expanse (TV series), The Expanse'', ''
Avatar Avatar (, ; ) is a concept within Hinduism that in Sanskrit literally means . It signifies the material appearance or incarnation of a powerful deity, or spirit on Earth. The relative verb to "alight, to make one's appearance" is sometimes u ...
'', ''Dune (franchise), Dune,'' and the ''Myst'' series of computer adventure games.


Ownership of constructed languages

The matter of whether or not a constructed language can be owned or protected by intellectual property laws, or if it would even be possible to enforce those laws, is contentious. In a 2015 lawsuit, CBS and Paramount Pictures challenged a fan film project called Axanar, stating the project infringed upon their intellectual property, which included the Klingon language, among other creative elements. During the controversy, Marc Okrand, the language's original designer expressed doubt as to whether Paramount's claims of ownership were valid. David J. Peterson, who created multiple well-known constructed languages including the Valyrian languages and Dothraki, advocated a similar opinion, saying that "Theoretically, anyone can publish anything using any language I created, and, in my opinion, neither I nor anyone else should be able to do anything about it."Owen, Beck
Can you copyright a fictional language?
''Copyright Licensing Agency'', 26 September 2019
However, Peterson also expressed concern that the respective rights-holders—regardless of whether or not their ownership of the rights is legitimate—would be likely to sue individuals who publish material in said languages, especially if the author might profit from said material. Furthermore, comprehensive learning material for such constructed languages as High Valyrian and Klingon has been published and made freely accessible on the language-learning platform Duolingo—but those courses are licensed by the respective copyright holders. Because only a few such disputes have occurred thus far, the legal consensus on ownership of languages remains uncertain. The Tasmanian Aboriginal Centre claims ownership of palawa kani, an attempted composite reconstruction of up to a dozen extinct Tasmanian indigenous languages, and has asked Wikipedia to remove its article on the project. However, there is no current legal backing for the claim.


Modern conlang organizations

Various papers on constructed languages were published from the 1970s through the 1990s, such as ''Glossopoeic Quarterly'', ''Taboo Jadoo'', and ''The Journal of Planned Languages''."How did you find out that there were other conlangers?"
Conlang list posting by And Rosta, 14 October 2007
The Conlang Mailing List was founded in 1991, and later split off an AUXLANG mailing list dedicated to international auxiliary languages. In the early to mid-1990s a few conlang-related zines were published as email or websites, such as ''Vortpunoj''
at Steve Brewer's website
and ''Model Languages''. The Conlang mailing list has developed a community of List of language inventors, conlangers with its own customs, such as translation challenges and translation relays, and its own terminology. Sarah Higley reports from results of her surveys that the demographics of the Conlang list are primarily men from North America and western Europe, with a smaller number from Oceania, Asia, the Middle East, and South America, with an age range from thirteen to over sixty; the number of women participating has increased over time. Later online communities include the Zompist Bulletin Board (ZBB; since 2001) and the Conlanger Bulletin Board. Discussion on these forums includes presentation of members' conlangs and feedback from other members, discussion of natural languages, whether particular conlang features have natural language precedents, and how interesting features of natural languages can be repurposed for conlangs, posting of interesting short texts as translation challenges, and meta-discussion about the philosophy of conlanging, conlangers' purposes, and whether conlanging is an art or a hobby. Another 2001 survey by Patrick Jarrett showed an average age of 30.65, with the average time since starting to invent languages 11.83 years."Update mailing list statistics—FINAL"
Conlang list posting by Patrick Jarrett, 13 September 2001
A more recent thread on the ZBB showed that many conlangers spend a relatively small amount of time on any one conlang, moving from one project to another; about a third spend years on developing the same language."Average life of a conlang"
thread on Zompist Bulletin Board, 15 August 2008; accessed 26 August 2008.

thread on Conlang mailing list, 27 August 2008 (should be archived more persistently than the ZBB thread)


Conlang creation

Most modern Conlanger, conlangers create conlangs as a hobby, for a fictional work, or for personal fulfillment. Conlangers typically create languages by defining their conlang's
phonology Phonology (formerly also phonemics or phonematics: "phonemics ''n.'' 'obsolescent''1. Any procedure for identifying the phonemes of a language from a corpus of data. 2. (formerly also phonematics) A former synonym for phonology, often pre ...
, syntax,
grammar In linguistics, grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, and words. The term may also refer to the study of such rul ...
, and other properties. Doing so requires at least a rudimentary understanding of
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 ...
.


See also

*List of constructed languages *Interlinguistics *Aboriginal constructed languages:
Damin Damin ( in the practical orthography of Lardil) was a ceremonial language register used by the advanced initiated men of the aboriginal Lardil ( in the practical orthography) and Yangkaal peoples of northern Australia. Both inhabit island ...
, Eskayan *Idioglossia *Idiolect *Cant (language) *ISO, SIL, and BCP language codes for constructed languages *Language construction **Artificial script **Langmaker **Language Construction Kit **Language game **List of language regulators, Language regulator **List of language inventors *Language modelling and translation **Knowledge representation **Language translation **Metalanguage **Universal grammar *Mystical languages **Glossolalia **Language of the birds *Spontaneous emergence of grammar **Artificial language **June and Jennifer Gibbons **Nicaraguan Sign Language **Origin of language **Pidgin **Poto and Cabengo *Linguistic determinism *Linguistic relativity *Pasigraphy *Universal language *''In the Land of Invented Languages''


Notes


References

* * *Couturat, Louis (1907). ''Les nouvelles langues internationales''. Paris: Hachette. With Léopold Leau. Republished 2001, Olms. *Couturat, Louis (1910). ''Étude sur la dérivation dans la langue internationales''. Paris: Delagrave. 100 p. * * *
"Babel's modern architects"
by Amber Dance. ''The Los Angeles Times'', 24 August 2007 (Originally published as "In their own words -- literally")


External links


Language Creation Society
a nonprofit dedicated to all forms of language creation.
Conlang Atlas of Language Structures
, a typological database of conlangs, based on the World Atlas of Language Structures.
Blueprints For Babel
focusing on international auxiliary languages. {{DEFAULTSORT:Constructed Language Constructed languages, Interlinguistics Language Linguistics