1.轻率的;轻浮的;不严肃的 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.
flippancy She must have thought that there was some flippancy in his tone, for she said, 'Andrew, I wish you'd take this seriously'. 她一定是觉得他的口气有点轻浮，因为她说道，“安德鲁，我希望你严肃一点。”
