| Solution | Length | |
|---|---|---|
| 3 letters | ||
| sly | 3 | |
| low | 3 | |
| 4 letters | ||
| bent | 4 | |
| wily | 4 | |
| 5 letters | ||
| shady | 5 | |
| sneak | 5 | |
| dirty | 5 | |
| privy | 5 | |
| cheap | 5 | |
| quiet | 5 | |
| sharp | 5 | |
| 6 letters | ||
| slinky | 6 | |
| sleazy | 6 | |
| sneaky | 6 | |
| rotten | 6 | |
| secret | 6 | |
| subtle | 6 | |
| shifty | 6 | |
| tricky | 6 | |
| 7 letters | ||
| unlucky | 7 | |
| cunning | 7 | |
| 8 letters | ||
| slippery | 8 | |
| stealthy | 8 | |
| scheming | 8 | |
| UNSAVORY | 8 | |
| sneaking | 8 | |
| twofaced | 8 | |
| ulterior | 8 | |
| SKULKING | 8 | |
| sinister | 8 | |
| 9 letters | ||
| two-faced | 9 | |
| underhand | 9 | |
| BACKSTAIR | 9 | |
| shameless | 9 | |
| deceptive | 9 | |
| unethical | 9 | |
| 10 letters | ||
| SUSPICIOUS | 10 | |
| undercover | 10 | |
| 11 letters | ||
| treacherous | 11 | |
| UNDERMANNED | 11 | |
| shorthanded | 11 | |
| underground | 11 | |
| unobtrusive | 11 | |
| 12 letters | ||
| UNPRINCIPLED | 12 | |
| questionable | 12 | |
| unscrupulous | 12 | |
| 13 letters | ||
| surreptitious | 13 | |
| 14 letters | ||
| unconscionable | 14 | |
| 15 letters | ||
| UNCONSCIENTIOUS | 15 | |