| Undeliverable letter | 20 |
| Undeleted expletive | 19 |
| Undefinitive statement | 22 |
| Undefined penalty | 17 |
| Undefined mathematical operation | 32 |
| Undefined amount | 16 |
| Undefined | 9 |
| Undefiled | 9 |
| Undefeated coll. 11 in '82 | 30 |
| Undefeated boxer, or her father | 31 |
| Undecorated type? | 17 |
| Undecorated | 11 |
| Undeclared | 10 |
| Undecided: Abbr. | 16 |
| Undecided, you might say | 24 |
| Undecided, on a TV schedule | 27 |
| Undecided, in some listings (abbr.) | 35 |
| Undecided, in an angsty way | 27 |
| Undecided, in a way | 19 |
| Undecided, as a jury | 20 |
| Undecided's oxymoron | 24 |
| Undecided's abbreviation | 28 |
| Undecided person | 16 |
| Undecided courtroom group | 25 |
| Undecided | 9 |
| Undeceived | 10 |
| Undebatable subject | 19 |
| Undealt portion of the deck | 27 |
| Undead in the water? | 20 |
| Undead flesheater | 17 |
| Undaunted | 9 |
| Undated? | 8 |
| Undamaged | 9 |
| Uncut ruby, e.g. | 16 |
| Uncut gem | 9 |
| Uncut | 5 |
| Uncurved, as test scores | 24 |
| Uncurl | 6 |
| Uncultured sort | 15 |
| Uncultured one | 14 |
| Uncultured | 10 |
| Uncultivated? | 13 |
| Uncultivated, probably | 22 |
| Uncultivated state | 18 |
| Uncultivated person | 19 |
| Uncultivated one | 16 |
| Uncultivated land | 17 |
| Uncultivated country | 20 |
| Uncultivated | 12 |
| Unctuousness | 12 |
| Unctuous, flattering speech | 27 |
| Unctuous speech | 15 |
| Unctuous quality | 16 |
| Unctuous preparation for external use | 37 |
| Unctuous preparation | 20 |
| Unctuous minerals | 17 |
| Unctuous medication | 19 |
| Unctuous hypocrite | 18 |
| Unctuous fluid | 14 |
| Unctuous flattery | 17 |
| Unctuous balms | 14 |
| Unctuous | 8 |
| Unctuosity | 10 |
| Uncrown | 7 |
| Uncrowded | 9 |
| Uncritically enthusiastic | 25 |
| Uncritical one | 14 |
| Uncritical learning style | 25 |
| Uncritical employee | 19 |
| Uncritical | 10 |
| Uncredited: Abbr. | 17 |
| Uncredited writers | 18 |
| Uncredited in 'Bartlett's' | 38 |
| Uncredited credit, in quotes | 28 |
| Uncredited cast member | 22 |
| Uncredited authors, for short | 29 |
| Uncredited authors | 18 |
| Uncredited author | 17 |
| Uncredited actors, and a hint to this puzzle's theme | 56 |
| Uncredited actor | 16 |
| Uncreative response | 19 |
| Uncreative poseur? | 18 |
| Uncreative periods | 18 |
| Uncreative learning method | 26 |
| Uncreative learning | 19 |
| Uncreative Father's Day present rated the best in the world? | 64 |
| Uncreative education method | 27 |
| Uncreative education | 20 |
| Uncreative | 10 |
| Uncrashable party | 17 |
| Uncracked? | 10 |
| Uncovers: Poet. | 15 |
| Uncovers, in poems | 18 |
| Uncovers, as evidence | 21 |
| Uncovers a serious flaw in municipal building plans? | 52 |
| Uncovers | 8 |
| Uncovering sofas? | 17 |
| Uncovered? | 10 |
| Uncovered, in military jargon | 29 |
| Uncovered, in a way | 19 |