| Clue | Length | Answer |
|---|---|---|
| Without basis | 4 letters | idly |
| Without basis | 4 letters | vain |
| Without basis | 7 letters | unfixed |
| Without basis | 7 letters | untried |
| Without basis | 8 letters | unproved |
| Without basis | 8 letters | untested |
| Without basis | 9 letters | unsettled |
| Without basis | 9 letters | untenable |
| Without basis | 9 letters | unfounded |
| Without basis | 10 letters | unverified |
| Without basis | 10 letters | ungrounded |
| Without basis | 11 letters | unconfirmed |
| Without basis | 11 letters | uncertified |
| Without basis | 11 letters | unsustained |
| Without basis | 11 letters | unwarranted |
| Without basis | 11 letters | unsupported |
| Without basis | 12 letters | undetermined |
| Without basis | 13 letters | unsupportable |
| Without basis | 13 letters | unestablished |
| Without basis | 13 letters | unsustainable |
| Without basis | 14 letters | undemonstrated |
| Without basis | 14 letters | uncorroborated |
| Without basis | 15 letters | unsubstantiated |
| Without basis | 15 letters | unauthenticated |
| Without basis | 18 letters | without-foundation |
Likely related crossword puzzle clues