| Text | Length |
| Unforgiving | 11 |
| Unforgettable time for historians | 33 |
| Unforgettable time | 18 |
| Unforgettable place | 19 |
| Unforgettable mission | 21 |
| Unforgettable louse? | 20 |
| Unforgettable edible | 20 |
| Unforgettable Cole | 18 |
| Unforested tract | 16 |
| Unforeseen woe | 14 |
| Unforeseen troubles | 19 |
| Unforeseen trouble | 18 |
| Unforeseen series of events brought on by a single act | 54 |
| Unforeseen problems | 19 |
| Unforeseen problem | 18 |
| Unforeseen plus | 15 |
| Unforeseen obstacle | 19 |
| Unforeseen glitch | 17 |
| Unforeseen effect | 17 |
| Unforeseen difficulty | 21 |
| Unforeseen difficulties | 23 |
| Unforeseen complication | 23 |
| Unforeseeable event | 19 |
| Unforced | 8 |
| Unfooled by | 11 |
| Unfolds, to Keats | 17 |
| Unfolds, poetically | 19 |
| Unfolds, in verse | 17 |
| Unfolds, in poetry | 18 |
| Unfolds | 7 |
| Unfolding view for a hapless hang-glider? | 41 |
| Unfolded, to Keats | 18 |
| Unfolded | 8 |
| Unfold: Poet. | 13 |
| Unfold, to poets | 16 |
| Unfold, poetically | 18 |
| Unfold, in verse | 16 |
| Unfold, in poetry | 17 |
| Unfold, in poesy | 16 |
| Unfold, as a rose | 17 |
| Unfold anew | 11 |
| Unfold a tale | 13 |
| Unfold | 6 |
| Unfocused, as a novel | 21 |
| Unfocused uneasiness | 20 |
| Unfocused sight | 15 |
| Unfocused photo, e.g. | 21 |
| Unfocused dread | 15 |
| Unfocused attempt | 17 |
| Unfocused apprehension | 22 |
| Unflustered | 11 |
| Unfluctuating | 13 |
| Unflinchingly realistic | 23 |
| Unflinching in the face of pain, say | 36 |
| Unflinching folks | 17 |
| Unflinching | 11 |
| Unfledged pigeon | 16 |
| Unfledged hawk | 14 |
| Unfledged bird | 14 |
| Unfledged | 9 |
| Unflawed | 8 |
| Unflavorful sundae topper? | 26 |
| Unflavored | 10 |
| Unflattering word for a ship | 28 |
| Unflattering type of cap | 24 |
| Unflattering shape | 18 |
| Unflattering rumors | 19 |
| Unflattering revelations | 24 |
| Unflattering portrait | 21 |
| Unflattering photo, usually | 27 |
| Unflattering pants | 18 |
| Unflattering Nixon sobriquet | 28 |
| Unflattering metaphor for a female senior | 41 |
| Unflattering gossip | 19 |
| Unflattering facial feature | 27 |
| Unflattering comparison for a fruitcake | 39 |
| Unflattering | 12 |
| Unflashy color | 14 |
| Unflashy coat | 13 |
| Unflashy | 8 |
| Unflappable types | 17 |
| Unflappable one | 15 |
| Unflappable | 11 |
| Unfixed neckwear? | 17 |
| Unfixed | 7 |
| Unfixable, as a car | 19 |
| Unfitting | 9 |
| Unfit to swim in | 16 |
| Unfit to ingest | 15 |
| Unfit to eat | 12 |
| Unfit one | 9 |
| Unfit Manhattanites? | 20 |
| Unfit for youngsters | 20 |
| Unfit for use | 13 |
| Unfit for highborn Brits | 24 |
| Unfit for growing | 17 |
| Unfit for farming, in a way | 27 |
| Unfit for farming | 17 |
| Unfit for detail work | 21 |
| Unfit for consumption | 21 |
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