List of constructed languages
- 1 Auxiliary languages
- 2 Ritual languages
- 3 Engineered languages
- 4 Artistic/fictional languages
- 5 See also
- 6 References
- 7 Further reading
- 8 External links
International auxiliary languages are languages constructed to provide communication among all human beings, or a significant portion, without necessarily replacing native languages.
|Language name||ISO||Year of first
|Solresol||1827||François Sudre||Based on pitch levels sounded with their solfege syllables (a "musical language") although no knowledge of music is required to learn it.|
|Communicationssprache||1839||Joseph Schipfer||Based on French|
|Universalglot||1868||Jean Pirro||An early a posteriori language, predating even Volapük|
|Volapük||vo, vol||1879–1880||Johann Martin Schleyer||First to generate international interest in IALs|
|Esperanto||eo, epo||1887||L. L. Zamenhof||The most popular auxiliary language ever invented, including, possibly, up to two million speakers, the highest ever for a constructed language and the only one to date to have its own native speakers (Approximately 1,000).|
|Spokil||1887 or 1890||Adolph Nicolas||An a priori language by a former Volapük advocate|
|Mundolinco||1888||J. Braakman||The first esperantido|
|Bolak, "Blue Language"||1899||Léon Bollack||Prospered fairly well in its initial years, now almost forgotten|
|Idiom Neutral||1902||Waldemar Rosenberger||A naturalistic IAL by a former advocate of Volapük|
|Latino sine Flexione||1903||Giuseppe Peano||"Latin without inflections," it replaced Idiom Neutral in 1908|
|Ro||1904||Rev. Edward Powell Foster||An a priori language using categories of knowledge|
|Ido||io, ido||1907||A group of reformist Esperanto speakers||The most successful offspring of Esperanto|
|Adjuvilo||1910||Claudius Colas||An esperantido some believe was created to cause dissent among Idoists|
|Occidental||ile||1922||Edgar de Wahl||A sophisticated naturalistic IAL, also known as Interlingue|
|Novial||nov||1928||Otto Jespersen||Another sophisticated naturalistic IAL by a famous Danish linguist|
|Sona||1935||Kenneth Searight||Best known attempt at universality of vocabulary|
|Esperanto II||1937||René de Saussure||Last of linguist Saussure's many esperantidos|
|Mondial||1940s||Dr. Helge Heimer||Naturalistic European language|
|Glosa||igs||1943||Lancelot Hogben, et al.||Originally called Interglossa, has a strong Greco-Latin vocabulary|
|Blissymbols||zbl||1949||Charles Bliss||An ideographic writing system, with its own grammar and syntax.|
|Interlingua||ia, ina||1951||International Auxiliary Language Association||A major effort to systematize the international scientific vocabulary . It aims to be immediately comprehensible by Romance language speakers (including to some extent English speakers).|
|Intal||1956||Erich Weferling||An effort to unite the most common systems of constructed languages|
|Romanid||1956||Zoltán Magyar||A zonal constructed language based on the Romance languages|
|Lingua sistemfrater||1957||Pham Xuan Thai||Greco-Latin vocabulary with southeast Asian grammar|
|Neo||neu||1961||Arturo Alfandari||A very terse European language|
|Babm||1962||Rikichi Okamoto||Notable for using Latin letters as a syllabary|
|Arcaicam Esperantom||1969||Manuel Halvelik||'Archaic Esperanto', developed for use in Esperanto literature|
|Afrihili||afh||1970||K. A. Kumi Attobrah||A pan-African language|
|Kotava||avk||1978||Staren Fetcey||A sophisticated a priori IAL|
|Uropi||1986||Joël Landais||Based on the common Indo-European roots and the common grammatical points of the IE languages|
|Poliespo||1990s?||Nvwtohiyada Idehesdi Sequoyah||Esperanto grammar with significant Cherokee vocabulary|
|Romániço||1991||Anonymous||Vocabulary is derived from common Romance roots.|
|Europanto||1996||Diego Marani||A "linguistic jest" by a European diplomat|
|Unish||1996||Language Research Institute, Sejong University||Vocabulary from fifteen representative languages|
|Lingua Franca Nova||lfn||1998||C. George Boeree and others||Romance vocabulary with creole-like grammar|
|Slovio||1999||Mark Hučko||A constructed language based on the Slavic languages and Esperanto grammar|
|Interslavic||2006||Ondrej Rečnik, Gabriel Svoboda, Jan van Steenbergen, Igor Polyakov||A naturalistic language based on the Slavic languages|
|Sambahsa-Mundialect||2007||Olivier Simon||Mixture of simplified Proto-Indo-European and other languages|
|Lingwa de planeta||2010||Dmitri Ivanov||Worldlang based on Arabic, Chinese, English, French, German, Hindi, Persian, Portuguese, Russian, and Spanish|
Controlled natural languages are natural languages that have been altered to make them simpler, easier to use, or more acceptable in certain circumstances, such as for use by people who do not speak the original language well. The following projects are examples of controlled English:
- Basic English, Special English and Globish seek to limit the language to a given list of common-use words and terms in order to make it simpler to foreign learners or other people who may have difficulties
- Plain English proposes a more direct, short, clear language by avoiding many idioms, jargon and foreign words
- Simplified Technical English seeks to largely reduce the complexity and ambiguity of technical texts (such as manuals)
- E-Prime eliminates the verb to be with the intent of making writing more expressive and accurate.
Visual languages use symbols or movements in place of the spoken word. Sign languages fall in this category.
These are languages (and scripts) in actual use by their communities or congregations.
- An Essay towards a Real Character and a Philosophical Language by John Wilkins
- Láadan (ldn)
- Loglan by James Cooke Brown
- Lojban (jbo) successor to Loglan by the Logical Language Group
- Toki Pona by Sonja Lang
- Attempto Controlled English is a controlled natural language that is also a knowledge representation language.
- Several well known Knowledge Query and Manipulation Languages have been created from extensive research projects, to represent and query knowledge on computers:
- Knowledge Interchange Format (KIF), a precursor for knowledge representation.
- Common Logic (CL), an ISO standard derived from KIF.
- Resource Description Framework (RDF), a language standardized by the World Wide Web Consortium (W3C) based on the principles of Common Logic, which represents knowledge as a directed graph built from unordered sets of "sentences" (in fact, as relational triples: subject, relation, attribute) using various syntaxes (XML, Turtle, JSON-LD, RDFa) for its interchange format. Each element of the triple can be either a simple value (if its semantic value is not specified outside of the relation using it), or identifiers of objects (such as URIs) that are part of enumeration built from another subset of relational triples. The relations may be open (in which case the attributes are not enumerable) or closed in a finite enumerable set whose elements can be easily represented as objects as well with their own identity participating in many different relations for other parts of the knowledge.
- UML may be used to describe the sets of relations and rules of inference and processing, and SQL may be used to use them in concrete schemas and compact store formats, but RDF designs its own (semantically more powerful) schema language for handling large sets of knowledge data stored in RDF format.
- RDF is most probably useful only for automated machine processing, but its verbosity and complex (for a human) representation mechanisms and inference rules does not qualify it as a human language except in very limited contexts. It is still a specification with extensive research.
- Web Ontology Language (OWL), another knowledge representation language standardized by W3C, and derived from Common Logic.
- The Distributed Language Translation project used a "binary-coded" version of Esperanto as a pivot language between the source language and its translation.
- Universal Networking Language (UNL)
Languages used in fiction
J. R. R. Tolkien
Additionally, sketches of various other languages, such as Adûnaic, the Black Speech, Khuzdul, Telerin and Westron appear in his Middle-earth works alongside earlier draughts or imagined archaic forms of Elven languages such as Common Eldarin or Primitive Quendian, Goldogrin, and Ilkorin. Others such as Entish, Rohirric, and six languages of the Avari are mentioned but have only one or two words or phrases noted. For the film adaptation, linguist David Salo was hired to expand on Tolkien's languages where required for dialogue.
- Baronh, language of Abh in Seikai no Monshō (Crest of the Stars) and others, by Morioka Hiroyuki.
- Láadan (ldn), in Suzette Haden Elgin's science fiction novel Native Tongue and sequels.
- Lapine, spoken by the rabbits in Watership Down by Richard Adams.
- Nadsat slang, in A Clockwork Orange by Anthony Burgess.
- Newspeak, a constructed language in Nineteen Eighty-Four by George Orwell.
- Spocanian, in Rolandt Tweehuysen's fictional country Spocania.
- Starsza Mowa (Elder Speech) from Andrzej Sapkowski's Hexer saga (The Witcher).
- Zaum, poetic tongue elaborated by Velimir Khlebnikov, Aleksei Kruchonykh, and other Russian Futurists as a "transrational" and "most universal" language "of songs, incantations, and curses."
- R'lyehian, inhuman sounding language developed by H.P Lovecraft for use in the Cthulhu Mythos
- Bordurian, in some of Hergé's The Adventures of Tintin, mostly in The Calculus Affair.
- Syldavian, in some of Hergé's The Adventures of Tintin, mostly in King Ottokar's Sceptre.
- Atlantean created by Marc Okrand for the film Atlantis: The Lost Empire.
- Barsoomian, the language of the Martians in the 2012 film John Carter based on Edgar Rice Burroughs' novels.
- Kilikili, the language spoken by the Kalakeyas in the film Baahubali: The Beginning. 
- Klingon (tlhIngan Hol), in the Star Trek films and television series, created by Marc Okrand.
- Ku, a fictional African language in the 2005 film The Interpreter.
- Na'vi, the fictional language spoken by the Na'vi in Avatar, created by Paul Frommer.
- Parseltongue, the 'language of the snakes' in the Harry Potter series.
- Tantalog, the language of the United Galactic Federation and Stitch's native language in the Lilo & Stitch franchise.
- Tenctonese from the Alien Nation film and television series, created by Van Ling and Kenneth Johnson.
- Shiväisith, created by David J. Peterson for the movie Thor: The Dark World is the language spoken in the movie by Dark Elves.
- Dothraki, created by David J. Peterson for the TV series Game of Thrones (based on the novel series A Song of Ice and Fire by George R. R. Martin).
- Enchanta, in the Encantadia and Etheria television series in the Philippines, created by the head writer Suzette Doctolero.
- Goa'uld, the galactic lingua franca from Stargate SG-1, supposedly influenced Ancient Egyptian.
- Pakuni, the language of the Pakuni from the Land of the Lost television series and film.
- The Valyrian languages, created by David J. Peterson for the TV series Game of Thrones (based on the novel series A Song of Ice and Fire by George R. R. Martin).
- The Verbis Diablo, created for the TV series Penny Dreadful.
- Vulcan language from Star Trek. Further developed by fans as Golic Vulcan.
- Kobaïan, created by Christian Vander, used by 1970s French rock group Magma.
- Loxian, created by Roma Ryan, used on Enya's 2005 album Amarantine and 2015 album Dark Sky Island.
- Moss, created by Jackson Moore in 2009, a language with a musical phonology, modeled on pidgins.
- D'ni, language spoken by the subterranean D'ni people in Cyan Worlds' Myst series of computer games and novels.
- Dovahzul, the primary non-English language used in the game The Elder Scrolls V: Skyrim, which has been refined and modernized by fans of the game.
- Gargish, used in the Ultima computer game series, by the gargoyle race.
- Tho Fan, in the Xbox game Jade Empire, created by Wolf Wikeley.
- "Panzerese," a mix of Ancient Greek, Latin and Russian in the Panzer Dragoon series.
- Tsolyani, by M. A. R. Barker in his world of Tékumel as described in the roleplaying game Empire of the Petal Throne.
- Wenja, Udam and Izila are the three primitive dialects based on Proto-Indo-European in Far Cry Primal.
- Dritok, by Don Boozer
- Kēlen, by Sylvia Sotomayor
- Teonaht, by Sally Caves
- Verdurian and several other languages created for the fictional planet of Almea by Mark Rosenfelder
Some experimental languages were developed to observe hypotheses of alternative linguistic interactions which could have led to very different modern languages. Two examples include:
- Brithenig, created by the inventor of the alternate history of Ill Bethisad, Andrew Smith
- Wenedyk, a language of the alternate history of Ill Bethisad created by Jan van Steenbergen
- Talossan, by R. Ben Madison
- Alien language
- Artificial script
- Constructed language
- Engineered language
- International auxiliary language
- Language game
- List of languages
- Voynich Manuscript
- Robert Phillipson. English-Only Europe? 2003. p. 172: "several thousand children worldwide are growing up (in over 2000 families) with Esperanto as one of their mother tongues"
- Cinema, Telugu. "Welcome to new language 'Kilikili' from Baahubali". SaddaHaq. Retrieved 2017-06-11.
- Adams, Michael, ed. (2011). From Elvish to Klingon: Exploring Invented Languages. Oxford, UK: Oxford University Press. ISBN 9780192807090. OCLC 713186702.
- Okrent, Arika (2009). In the Land of Invented Languages: Esperanto Rock Stars, Klingon Poets, Loglan Lovers, and the Mad Dreamers Who Tried to Build a Perfect Language. New York: Spiegel & Grau. ISBN 9780385527880. OCLC 321034148.
- Peterson, David J. (2015). The Art of Language Invention: From Horse-Lords to Dark Elves, the Words Behind World-Building. New York: Penguin Books. ISBN 9780143126461. OCLC 900623553.
- Rosenfelder, Mark (2010). The Language Construction Kit. Chicago: Yonagu Books. ISBN 9780984470006. OCLC 639971902.
- Rosenfelder, Mark (2012). Advanced Language Construction. Chicago: Yonagu Books. ISBN 9781478267539. OCLC 855786940. The sequel to The Language Construction Kit.