disapproval If you say that someone is being facetious, you are criticizing them because they are making humorous remarks or saying things that they do not mean in a situation where they ought to be serious. The woman eyed him coldly. `Don't be facetious,' she said. = flippant. saying things that are intended to be clever and funny but are really silly and annoying (facétieux, from facétie )
cleverly amusing in tone; "a bantering tone"; "facetious remarks"; "tongue-in-cheek advice"
Given to wit and good humor; merry; sportive; jocular; as, a facetious companion