flippant

Universal Words (also informal flip) adjective showing that you do not take sth as seriously as other people think you should: a flippant answer / attitude * Sorry, I didn't mean to sound flippant. * You can't afford to be flippant about such matters. flippancy noun [U]: His flippancy conceals a deep insecurity. flippantly adverb: 'Oh dear,' he said flippantly.