| Solution | Length | |
|---|---|---|
| 3 letters | ||
| and | 3 | |
| 4 letters | ||
| deny | 4 | |
| vain | 4 | |
| idle | 4 | |
| 5 letters | ||
| rumor | 5 | |
| false | 5 | |
| 6 letters | ||
| unreal | 6 | |
| canard | 6 | |
| untrue | 6 | |
| 7 letters | ||
| potshot | 7 | |
| UNFIXED | 7 | |
| nottrue | 7 | |
| seeming | 7 | |
| untried | 7 | |
| unsound | 7 | |
| 8 letters | ||
| SPECIOUS | 8 | |
| baseless | 8 | |
| untested | 8 | |
| UNPROVED | 8 | |
| spurious | 8 | |
| spectral | 8 | |
| 9 letters | ||
| visionary | 9 | |
| untenable | 9 | |
| unsettled | 9 | |
| 10 letters | ||
| unverified | 10 | |
| UNGROUNDED | 10 | |
| UNRELIABLE | 10 | |
| groundless | 10 | |
| 11 letters | ||
| unsupported | 11 | |
| UNCONFIRMED | 11 | |
| uncertified | 11 | |
| UNWARRANTED | 11 | |
| unsustained | 11 | |
| UNAUTHENTIC | 11 | |
| 12 letters | ||
| UNDETERMINED | 12 | |
| uncalled-for | 12 | |
| 13 letters | ||
| CYBERCHONDRIA | 13 | |
| unsubstantial | 13 | |
| unsustainable | 13 | |
| UNSUPPORTABLE | 13 | |
| unestablished | 13 | |
| 14 letters | ||
| supposititious | 14 | |
| UNCORROBORATED | 14 | |
| undemonstrated | 14 | |
| 15 letters | ||
| UNAUTHENTICATED | 15 | |
| UNSUBSTANTIATED | 15 | |
| unauthoritative | 15 | |
| 18 letters | ||
| without foundation | 18 | |