1. conducted with or marked by hidden aims or methods;

   "clandestine intelligence operations"
   "cloak-and-dagger activities behind enemy lines"
   "hole-and-corner intrigue"
   "secret missions"
   "a secret agent"
   "secret sales of arms"
   "surreptitious mobilization of troops"
   "an undercover investigation"
   "underground resistance"
   

1.(通常因违法而)偷偷摸摸的，暗地里的，秘密的
Something that isclandestine is hidden or kept secret, often because it is illegal.

e.g. ...theirclandestine meetings.
他们的秘密会晤

1. 秘密的：clamorous#吵闹的 |clandestine#秘密的 | cogent#强有力的

2. 暗中的,秘密的：clan n. 宗族;部落 |clandestine 暗中的,秘密的 | distort v. 歪曲;扭曲

3. 秘密的,暗中从事的：clandestine 秘密的,暗中从事的 | clothesline 晒衣绳;(俚)私人事情,家丑 | collaborate 协作,合作;协调

4.

4. 秘密的/暧：clan /氏族/部族/一族/一门/党派/派阀/家族/族/ |clandestine /秘密的/暧/ |clandestinely /秘密地/暗中地/