sub-rosa

• 书面语形容词，指秘密的、机密的，或以隐秘方式进行的。

An old-fashioned adjective meaning secret, confidential, or done in a clandestine manner.

1. C2formal

   Designed and carried out in a secret or confidential manner.

   秘密或机密的

   • The negotiations were conducted sub-rosa to avoid public scrutiny.
   • They held a sub-rosa meeting to discuss the merger.
   • The sub-rosa agreement was never made public.

   同义词behind-the-scenesclandestineconfidentialcoverthush-hushoff the recordprivatesecretsurreptitiousundercover

   反义词knownopenovertpublic