1. 轻浮：flightily 轻浮地 | flightiness 轻浮 | flightism 逃跑主义

2. 轻浮/疯狂：flightily /轻浮地/轻狂地/浮躁地/ | flightiness /轻浮/疯狂/ | flightless /不能飞的/

3. 轻浮; 疯狂 (名)：flight simulator 飞行模拟装置, 飞行练习器 | flightiness 轻浮; 疯狂 (名) | flightless 不能飞的 (形)

noun

1. the trait of acting unpredictably and more from whim or caprice than from reason or judgment

    e.g. I despair at the flightiness and whimsicality of my memory

    Synonym: arbitrarinesswhimsicalitywhimsywhimseycapriciousness