“轻浮的”用英语怎么说

她是个轻浮的人.She is a giddy thing.他是个非常浅薄轻浮的人.He's a very trivial person.举动轻浮的,老迈糊涂的,都要裁了他!立刻调进一批好的来!Young hotheads and old stick - in - the - muds must all go to make way for new blood!...