| 秘密 | mì mì | secret / private / confidential / clandestine / a secret (CL:個|个[ge4]) |   |
| 私房 | sī fang | personal / private / confidential | |
| 密 |  mì | dense / close / thick / intimate / close / (bound form) secret / confidential / (Internet slang) to send a private message to (sb) / to DM | |
| 密而不宣 | mì ér bù xuān | confidential / secret / hush-hush | |
| 保密 | bǎo mì | to keep sth confidential / to maintain secrecy | |
| 机要 | jī yào | (attributive) (of a person) involved in sensitive, confidential work / (of information) secret / classified | |
| 密商 | mì shāng | to negotiate in secret / confidential discussions | |
| 隐衷 | yǐn zhōng | a secret / sth best not told to anyone / confidential information | |
| 联合国机密 | lián hé guó jī mì | UN confidential | |
| 保密自愿咨询检测 | | Voluntary and Confidential Counselling and Testing | |
| 保护机密资料附件 | | Annex on the Protection of Confidential Information | |
| 事机 | shì jī | confidential aspects of a matter / secrets / key moment for action | |
