CONLANG
Etymology
Noun
conlang (plural conlangs)
A constructed language; a language that has been artificially constructed, such as Volapük, Esperanto, Quenya or Klingon.
Synonyms
• artificial language
• constructed language
• planned language
Verb
conlang (third-person singular simple present conlangs, present participle conlanging, simple past and past participle conlanged)
To make a constructed language.
Brithenig was conlanged with the purpose of looking how Welsh might have developed if it were a Romance language.
Source: Wiktionary