[mass noun]the treatment of a serious matter with humour or in a manner lacking due respect 轻松诙谐;轻浮 as an attempt to introduce a note of levity, the words were a disastrous flop. 本想把话说得轻松诙谐点儿,没想到结果会这么糟。
语源
mid 16th cent.: from Latin levitas, from levis 'light'