II 形 secret; clandestine; confidential (opp.  公开): |
| | 秘密工作 work in secret |
| | 秘密结社 form a secret society |
| | 秘密报告 secret report; confidential report |
| | 秘密斗争 underground struggle; secret war |
| | 秘密会议 secret meeting; closed-door session |
| | 秘密活动 clandestine activities |
| | 秘密警察 the secret police |
| | 秘密渠道 back channels; back corridors |
| | 秘密通信 confidential correspondence |
| | 秘密投票 secret ballot; Australian ballot |
| | 秘密外交 secret diplomacy |
| | 秘密卫星 unannounced satellite |
| | 秘密文件 secret papers; confidential document |
| | 秘密武器 secret weapon |
| | 秘密消息 classified information; confidential information |
| | 秘密佣金 undeclared commission; kickback |
