Eng

Confidential...

秘

Clandestine, Classified, Confidential, Hidden, Mysterious, Secret, Unknown

密

Close, Concentrated, Confidential, Dense, Hidden, Intimate, Secret, Thick

體己

Confidential, Personal, Private

機密

Classified, Confidential, Privileged, Secret

機密訊息

Confidential

(Classified, Privileged, Secret, Data, Information, Message, Signal)