mindmap root((轻浮)) lightness implies a lack of weight and seriousness and sometimes an instability or careless heedlessness: the only bit of ~ in a dreary, ponderous drama. levity suggests trifling or unseasonable gaiety: injected a moment of ~ in the solemn proceedings. frivolity suggests irresponsible indulgence in gaieties or in idle speech or conduct: a playgirl living a life of uninterrupted ~. flippancy implies an unbecoming levity especially in speaking of grave or sacred matters: spoke of the bombing with annoying ~. （unbecoming言行和身份品格不符，不得体implies behavior or language beneath or unsuitable to one's status or character，如conduct unbecoming an officer和军官身份不符的行为） volatility implies such lightness or fickleness of disposition as prevents long attention to any one thing: the ~ of the public interest in foreign aid. flightiness implies extreme volatility that may approach loss of mental balance: the ~ of my grandmother in her old age.