conlanguageEtymologyClipped compound of constructed language. By surface analysis, con- (“constructed”) + language.conlanguage means synonym of constructed language. Lexicurio rates it Sui generis — a strength score of 100 out of 100.nounSynonym of constructed language.“You should look at the conlanguage Lojban, you can mark tenses and space contexts just about anywhere. You can probably tell a good joke in one "utterance".”