| Text | Length |
| Unfilled orders | 15 |
| Unfilled slot abbr. | 19 |
| Unfilled space | 14 |
| Unfilled spaces | 15 |
| Unfilled-slot abbr. | 19 |
| Unfinished business | 19 |
| Unfinished details | 18 |
| Unfinished joint | 16 |
| Unfinished novel? | 17 |
| Unfinished statue | 17 |
| Unfinished threat | 17 |
| Unfit dweebs? | 13 |
| Unfit for farming | 17 |
| Unfit for growing | 17 |
| Unfit for use | 13 |
| Unfit to eat | 12 |
| Unfit to ingest | 15 |
| Unfit to swim in | 16 |
| Unfixable, as a car | 19 |
| Unfixed neckwear? | 17 |
| Unflappable one | 15 |
| Unflappable types | 17 |
| Unflashy coat | 13 |
| Unflashy color | 14 |
| Unflattering | 12 |
| Unflattering gossip | 19 |
| Unflattering pants | 18 |
| Unflattering rumors | 19 |
| Unflattering shape | 18 |
| Unfledged bird | 14 |
| Unfledged hawk | 14 |
| Unfledged pigeon | 16 |
| Unflinching folks | 17 |
| Unfluctuating | 13 |
| Unfocused attempt | 17 |
| Unfocused dread | 15 |
| Unfocused sight | 15 |
| Unfold a tale | 13 |
| Unfold, as a rose | 17 |
| Unfold, in poesy | 16 |
| Unfold, in poetry | 17 |
| Unfold, in verse | 16 |
| Unfold, poetically | 18 |
| Unfold, to poets | 16 |
| Unfold: Poet. | 13 |
| Unfolded, to Keats | 18 |
| Unfolds, in poetry | 18 |
| Unfolds, in verse | 17 |
| Unfolds, poetically | 19 |
| Unfolds, to Keats | 17 |
| Unforeseeable event | 19 |
| Unforeseen effect | 17 |
| Unforeseen glitch | 17 |
| Unforeseen obstacle | 19 |
| Unforeseen plus | 15 |
| Unforeseen problem | 18 |
| Unforeseen problems | 19 |
| Unforeseen trouble | 18 |
| Unforeseen troubles | 19 |
| Unforeseen woe | 14 |
| Unforested tract | 16 |
| Unforgettable Cole | 18 |
| Unforgettable place | 19 |
| Unforgettable time | 18 |
| Unforgiving muscle | 18 |
| Unfortunate destiny | 19 |
| Unfortunate event | 17 |
| Unfortunate events | 18 |
| Unfortunate fate | 16 |
| Unfortunate fellow | 18 |
| Unfortunate folks | 17 |
| Unfortunate meeting | 19 |
| Unfortunate sort | 16 |
| Unfortunate soul | 16 |
| Unfortunate trio | 16 |
| Unfortunate type | 16 |
| Unfortunately | 13 |
| Unfortunates | 12 |
| Unfounded belief | 16 |
| Unfounded notion | 16 |
| Unfounded report | 16 |
| Unfounded rumor | 15 |
| Unfounded rumors | 16 |
| Unfounded suspicion | 19 |
| Unfreeze the wings | 18 |
| Unfrequented | 12 |
| Unfrequented: poet. | 19 |
| Unfriendliness | 14 |
| Unfriendly bacteria | 19 |
| Unfriendly dog | 14 |
| Unfriendly greeting | 19 |
| Unfriendly inns? | 16 |
| Unfriendly look | 15 |
| Unfriendly looks | 16 |
| Unfriendly manner | 17 |
| Unfriendly one | 14 |
| Unfriendly quality | 18 |
| Unfriendly sorts | 16 |
| Unfriendly sound | 16 |
| Unfriendly types | 16 |
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