| Solution | Length | |
|---|---|---|
| 3 letters | ||
| tum | 3 | |
| 4 letters | ||
| vain | 4 | |
| free | 4 | |
| 5 letters | ||
| havel | 5 | |
| undue | 5 | |
| 6 letters | ||
| UNDULY | 6 | |
| scarce | 6 | |
| 7 letters | ||
| unowing | 7 | |
| triable | 7 | |
| 8 letters | ||
| usurious | 8 | |
| untoward | 8 | |
| unworthy | 8 | |
| wrongful | 8 | |
| unlawful | 8 | |
| UNPROVED | 8 | |
| 9 letters | ||
| unallowed | 9 | |
| spiraling | 9 | |
| UNMERITED | 9 | |
| untenable | 9 | |
| unfounded | 9 | |
| unchecked | 9 | |
| 10 letters | ||
| unverified | 10 | |
| UNDESERVED | 10 | |
| PUNISHABLE | 10 | |
| UNGROUNDED | 10 | |
| UNOFFICIAL | 10 | |
| 11 letters | ||
| prohibitive | 11 | |
| uncalledfor | 11 | |
| UNAUTHENTIC | 11 | |
| uncertified | 11 | |
| UNCONFIRMED | 11 | |
| unsupported | 11 | |
| unsustained | 11 | |
| 12 letters | ||
| skyrocketing | 12 | |
| uncalled-for | 12 | |
| unreasonable | 12 | |
| unauthorised | 12 | |
| preposterous | 12 | |
| unauthorized | 12 | |
| 13 letters | ||
| UNSUPPORTABLE | 13 | |
| UNWARRANTABLE | 13 | |
| unsustainable | 13 | |
| 14 letters | ||
| UNCORROBORATED | 14 | |
| undemonstrated | 14 | |
| unconscionable | 14 | |
| 15 letters | ||
| unauthoritative | 15 | |
| UNAUTHENTICATED | 15 | |
| 16 letters | ||
| unconstitutional | 16 | |
| 18 letters | ||
| without foundation | 18 | |