Speaking fluently and confidently, without knowledge or consideration; empty; trifling; inconsiderate; pert; petulant
disapproval If you describe a person or what they say as flippant, you are criticizing them because you think they are not taking something as seriously as they should. Don't be flippant, damn it! This is serious! He now dismisses that as a flippant comment. = flip, glib. not being serious about something that other people think you should be serious about (FLIP)