/ˈkʌvət/
- not openly acknowledged or displayed隐蔽的; 秘密的; 隐藏的：
covert operations against the dictatorship
反对独裁政府的秘密行动。
/ˈkʌvə(r)/
1
- a thicket in which game can hide（猎物藏身的）丛林。
2
- Ornithology any of the feathers covering the bases of the main flight or tail feathers of a bird【鸟】覆羽。
派生词
covertly
adverbcovertness
noun词源
Middle English （in the general senses 'covered' and 'a cover'）： from Old French, 'covered', past participle of covrir （see COVER）.