- The language of a people, a national language.
- The vernacular of the United States is American English.
- Everyday speech, including colloquialisms, as opposed to literary or liturgical language.
- Street vernacular can be quite different from what is heard elsewhere.
- Language unique to a particular group of people; jargon, argot, slang.
- For those of a certain age, hiphop vernacular might just as well be a foreign language.
- (Christianity) The indigenous language of a people, into which the words of the Roman Catholic mass are translated.
- Vatican II ordered the celebation of the mass in the vernacular.