adj. 1 native, local, regional, indigenous, autochthonous Old Hebrew fell out of use, to be replaced by vernacular Aramaic 2 popular, informal, colloquial, conversational, ordinary, familiar, everyday, spoken, vulgar, vulgate; plain, simple, straightforward, easy We have both the vernacular and the formal, literary, or clerical levels of language Can you translate this scientific gobbledegook into vernacular English that we can understand?
n. 3 jargon, patois, argot, cant, idiom, phraseology, language, talk, speech Alf occasionally slips into the vernacular of a Billingsgate fishmonger (his former calling )