| Solution | Length | |
|---|---|---|
| 3 letters | ||
| new | 3 | |
| 4 letters | ||
| rare | 4 | |
| 6 letters | ||
| noname | 6 | |
| unique | 6 | |
| exotic | 6 | |
| virgin | 6 | |
| sealed | 6 | |
| unsung | 6 | |
| 7 letters | ||
| unusual | 7 | |
| unknown | 7 | |
| strange | 7 | |
| unnoted | 7 | |
| 8 letters | ||
| puzzling | 8 | |
| wondrous | 8 | |
| uncommon | 8 | |
| UNWONTED | 8 | |
| striking | 8 | |
| 9 letters | ||
| unnoticed | 9 | |
| unearthly | 9 | |
| UNEXPOSED | 9 | |
| unbeknown | 9 | |
| uncharted | 9 | |
| unplumbed | 9 | |
| untouched | 9 | |
| unpopular | 9 | |
| wonderful | 9 | |
| recherche | 9 | |
| 10 letters | ||
| unrenowned | 10 | |
| stupendous | 10 | |
| UNKNOWABLE | 10 | |
| unrevealed | 10 | |
| PRODIGIOUS | 10 | |
| UNEXPLORED | 10 | |
| unordinary | 10 | |
| unexpected | 10 | |
| unfathomed | 10 | |
| remarkable | 10 | |
| unfamiliar | 10 | |
| 11 letters | ||
| UNEXPLAINED | 11 | |
| unsuspected | 11 | |
| UNPERCEIVED | 11 | |
| uncustomary | 11 | |
| unglorified | 11 | |
| sui generis | 11 | |
| sensational | 11 | |
| UNDISCLOSED | 11 | |
| 12 letters | ||
| unimaginable | 12 | |
| unclassified | 12 | |
| UNCELEBRATED | 12 | |
| undreamed of | 12 | |
| UNDISCOVERED | 12 | |
| unthought of | 12 | |
| UNIDENTIFIED | 12 | |
| 13 letters | ||
| unaccountable | 13 | |
| unprecedented | 13 | |
| 14 letters | ||
| undiscoverable | 14 | |
| 15 letters | ||
| UNDISTINGUISHED | 15 | |