fa·ce·tious \fəˈsēshəs\adjective Etymology: Middle French facetieux, from facetie jest (from Latin facetia) + -eux -ous 1. a.: given to jesting that is sometimes crude < a facetious companion > b.obsolete: gay and witty 2.: characterized by pleasantry or levity : exciting laughter : jocose < a facetious story > < his impudently facetious reply > Synonyms:see witty