| Rating | Solver | Clue |
|---|---|---|
| COVERT | Clandestine | |
| UNDERCOVER | Clandestine | |
| SECRET | Clandestine | |
| UNDERHAND | Clandestine | |
| BACKDOOR | Clandestine (methods) | |
| STEALTH | Clandestine procedure | |
| PRIVY | Secret; clandestine. | |
| UNDERHANDED | Underhand; clandestine. | |
| HUGGER-MUGGER | Secret; clandestine; sly. | |
| CLANCULAR | Conducted with secrecy; clandestine; concealed. | |
| UNDERPLOT | A clandestine scheme; a trick. | |
| COLLUSION | Clandestine cooperation conducted to gain an advantage | |
| UNDERWORK | To injure by working secretly; to destroy or overthrow by clandestine measure; to undermine. | |
| BACKBITE | To wound by clandestine detraction; to censure meanly or spitefully (an absent person); to slander or speak evil of (one absent). | |
| CLANDESTINE | Conducted with secrecy; withdrawn from public notice, usually for an evil purpose; kept secret; hidden; private; underhand; as, a clandestine marriage. | |
| UNDERMINE | Fig.: To remove the foundation or support of by clandestine means; to ruin in an underhand way; as, to undermine reputation; to undermine the constitution of the state. | |
| SURREPTITIOUS | Done or made by stealth, or without proper authority; made or introduced fraudulently; clandestine; stealthy; as, a surreptitious passage in an... | |