covert
🇺🇸
/ˈkəʊvɜːrt/
🇬🇧
/ˈkʌvət/
not openly shown or done; hidden.
They exchanged covert smiles.
他们交换了秘密的微笑。
a hidden or covered area that animals use as a shelter.
A rabbit darted into the covert to hide.
一只兔子窜进密林躲藏。