| Solution | Length | |
|---|---|---|
| 3 letters | ||
| hid | 3 | |
| 4 letters | ||
| deep | 4 | |
| 5 letters | ||
| perdu | 5 | |
| vague | 5 | |
| privy | 5 | |
| WRAPT | 5 | |
| 6 letters | ||
| untold | 6 | |
| covert | 6 | |
| unseen | 6 | |
| subtle | 6 | |
| secret | 6 | |
| veiled | 6 | |
| hidden | 6 | |
| begirt | 6 | |
| latent | 6 | |
| 7 letters | ||
| private | 7 | |
| unknown | 7 | |
| STIFLED | 7 | |
| covered | 7 | |
| furtive | 7 | |
| 8 letters | ||
| unspoken | 8 | |
| obscured | 8 | |
| SHROUDED | 8 | |
| enfolded | 8 | |
| secluded | 8 | |
| closeted | 8 | |
| screened | 8 | |
| ulterior | 8 | |
| 9 letters | ||
| encircled | 9 | |
| CURTAINED | 9 | |
| lying low | 9 | |
| unuttered | 9 | |
| ENVELOPED | 9 | |
| SUBMERGED | 9 | |
| unnoticed | 9 | |
| RECONDITE | 9 | |
| sightless | 9 | |
| smothered | 9 | |
| 10 letters | ||
| top-secret | 10 | |
| undercover | 10 | |
| unobserved | 10 | |
| UNREALIZED | 10 | |
| restricted | 10 | |
| SUPPRESSED | 10 | |
| surrounded | 10 | |
| unrevealed | 10 | |
| ENSHROUDED | 10 | |
| 11 letters | ||
| unutterable | 11 | |
| UNDISCLOSED | 11 | |
| underground | 11 | |
| UNDER WRAPS | 11 | |
| UNPERCEIVED | 11 | |
| clandestine | 11 | |
| SEQUESTERED | 11 | |
| 13 letters | ||
| undisclosable | 13 | |
| surreptitious | 13 | |