flip·pan·cy
noun/ˈflɪpənsi/
/ˈflɪpənsi/
[uncountable] (disapproving)- the fact of tending not to take things as seriously as other people think you should
轻率的 - His flippancy conceals a deep insecurity.
他的轻率掩盖了深深的不安全感。
- His flippancy conceals a deep insecurity.