clandestine

• 形容秘密进行的、暗中隐藏的事物，常带有非法或不可告人的目的。

Describes something that is done in secret or kept hidden, often for illicit or covert purposes.

1. Secret or covertC1formal

   Kept secret or done in a secret way, often because it is illegal or unauthorized.

   秘密的

   • The agents conducted a clandestine operation behind enemy lines.
   • They held a clandestine meeting in the basement to avoid detection.
   • The organization was involved in clandestine activities that violated international law.

   同义词cloak-and-daggercovertfurtivehiddenprivatesecretslystealthysurreptitiousundercoverundergroundunderhand

   反义词aboveboardmanifestopenovertpublic