| Unofficial end of summer | 24 |
| Unofficial news source | 22 |
| Unofficial poll | 15 |
| Unofficial promissory note | 26 |
| Unofficial Seabees' motto | 29 |
| Unofficial ticket source | 24 |
| Unofficial, like some university degrees | 40 |
| Unofficially off-base | 21 |
| Unoiled robot's problem? | 28 |
| Unopened | 8 |
| Unopened bloom | 14 |
| Unopened CD contains "Go Down In Flames" | 50 |
| Unopened flower | 15 |
| Unopened flowers | 16 |
| Unopened in the box | 19 |
| Unopened rose | 13 |
| Unopened roses | 14 |
| Unopened tulip | 14 |
| Unopened White album? | 21 |
| Unopened, as a wine bottle | 26 |
| Unopposed candidate: 1789 | 25 |
| Unopposed slots in tournaments | 30 |
| Unordinary | 10 |
| Unorganized | 11 |
| Unoriginal | 10 |
| Unoriginal and dull | 19 |
| Unoriginal argument | 19 |
| Unoriginal desserts? | 20 |
| Unoriginal movie? | 17 |
| Unoriginal newspaper worker? | 28 |
| Unoriginal one | 14 |
| Unoriginal ones | 15 |
| Unoriginal order, with "the" | 38 |
| Unoriginal people | 17 |
| Unoriginal person | 17 |
| Unoriginal reply | 16 |
| Unoriginal response | 19 |
| Unoriginal show? | 16 |
| Unoriginal story | 16 |
| Unoriginal type | 15 |
| Unoriginal types | 16 |
| Unoriginal work | 15 |
| Unoriginal: Abbr. | 17 |
| Unoriginality | 13 |
| Unornamented | 12 |
| Unorthodox | 10 |
| Unorthodox belief | 17 |
| Unorthodox believer | 19 |
| Unorthodox debate stoppage | 26 |
| Unorthodox doctrine | 19 |
| Unorthodox opinion | 18 |
| Unorthodox sect | 15 |
| Unorthodox thinker | 18 |
| Unorthodox thinking | 19 |
| Unorthodox, untraditional leaders | 33 |
| Unorthodoxy | 11 |
| Unpackaged | 10 |
| Unpadded | 8 |
| Unpaid | 6 |
| Unpaid amount | 13 |
| Unpaid babysitter, often | 24 |
| Unpaid babysitter, perhaps | 26 |
| Unpaid babysitters, maybe | 25 |
| Unpaid bill | 11 |
| Unpaid bills | 12 |
| Unpaid chit | 11 |
| Unpaid credit card bills, e.g. | 30 |
| Unpaid debt | 11 |
| Unpaid debt, e.g. | 17 |
| Unpaid debts | 12 |
| Unpaid factory worker | 21 |
| Unpaid factory workers | 22 |
| Unpaid gofer | 12 |
| Unpaid loan result, sometimes | 29 |
| Unpaid loan, e.g. | 17 |
| Unpaid mine workers | 19 |
| Unpaid performer | 16 |
| Unpaid portions | 15 |
| Unpaid servant | 14 |
| Unpaid sitter | 13 |
| Unpaid sitter, perhaps | 22 |
| Unpaid staffers, usually | 24 |
| Unpaid summer position, perhaps | 31 |
| Unpaid TV ad | 12 |
| Unpaid TV ad: Abbr. | 19 |
| Unpaid TV ads | 13 |
| Unpaid TV ads (Abbr.) | 21 |
| Unpaid TV spots | 15 |
| Unpaid worker | 13 |
| Unpaid workers | 14 |
| Unpaid workers? | 15 |
| Unpaid-for perk | 15 |
| Unpaired | 8 |
| Unpaired, as a chromosome | 25 |
| Unpaired, as a sock | 19 |
| Unpalatable fare | 16 |
| UnPArallel, as tracks | 21 |
| Unparalleled | 12 |
| Unpardonable one? | 17 |
| Unpartnered | 11 |