behaviour that shows a lack of respect for something serious and that treats it with humour synonym frivolity轻率的举止;轻浮;轻佻 The joke provided a moment of levity in an otherwise dreary meeting. 这个笑话为原本沉闷的会议提供了一个轻松的时刻。
Word Originmid 16th cent.: from Latin levitas, from levis ‘light’.