A constructed language (shortened to conlang) is a language whose phonology, grammar, orthography, and vocabulary, 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. 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.
There are many possible reasons to create a constructed language, such as to ease human communication (see international auxiliary language and code); to give fiction or an associated constructed setting an added layer of realism; for experimentation in the fields of linguistics, cognitive science, and machine learning; for artistic creation; for fantasy role-playing games; and for language games. Some people may also make constructed languages as a hobby.
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, the term language planning 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 languages such as Latin and Sanskrit, 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 languages.
Conlang speakers are rare. For example, the Hungarian census of 2011 found 8,397 speakers of Esperanto, and the census of 2001 found 10 of Romanid, two each of Interlingua and Ido and one each of Idiom Neutral and Mundolinco. The Russian census of 2010 found that in Russia there were about 992 speakers of Esperanto (the 120th most common) and nine of the Esperantido Ido. (Full article...)
Afrihili (Ni Afrihili Oluga 'the Afrihili language') is a constructed language designed in 1970 by Ghanaian historian K. A. Kumi Attobrah (Kumi Atɔbra) to be used as a lingua franca in all of Africa. The name of the language is a combination of Africa and Swahili. The author, a native of Akrokerri (Akrokɛri) in Ghana, originally conceived of the idea in 1967 while on a sea voyage from Dover to Calais. His intention was that "it would promote unity and understanding among the different peoples of the continent, reduce costs in printing due to translations and promote trade". It is meant to be easy for Africans to learn.
Afrihili draws its phonology, morphology and syntax from various African languages, particularly Swahili and Akan (Attobrah's native language). The lexicon covers various African languages, as well as words from many other sources "so Africanized that they do not appear foreign", although no specific etymologies are indicated by the author. However, the semantics is quite English, with many calques of English expressions, perhaps due to the strong English influence on written Swahili and Akan. For example, mu is 'in', to is 'to', and muto is 'into'; similarly, kupitia is 'through' (as in 'through this remedy'), paasa is 'out' (as in to go outside), and kupitia-paasa is 'throughout'—at least in the original, 1970 version of the language.
The language uses the Latin alphabet with the addition of two vowel letters, ⟨Ɛ ɛ⟩ and ⟨Ɔ ɔ⟩, which have their values in Ghanaian languages and the IPA, [ɛ] and [ɔ]. Find out more...
...that Adjuvilo, although it was a fully developed language, was merely created to help create dissent in the then-growing Ido movement?
...that Winston Churchill initially supported Basic English as an international language, but was put off when he was told that "blood, toil, tears and sweat" translates as "blood, hard work, eyewash and body water"?
...that Kēlen is a constructed language that has no verbs, but still is able to express anything?
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Some Internet resources relating to constructed languages, by Richard Kennaway
UniLang.org
Conlang wiki
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