| Unruffle one's feathers | 27 |
| Unruffled one's nickname | 28 |
| Unruffled, per Gelett Burgess | 29 |
| Unruly crowd participants | 25 |
| Unruly one, in Scotland | 23 |
| Unsaid, but understood | 22 |
| Unsanctioned news sources | 25 |
| Unsatisfactorily small | 22 |
| Unsatisfactory, as an excuse | 28 |
| Unsatisfactory, as excuses | 26 |
| Unsatisfying boxing result | 26 |
| Unsatisfying game result | 24 |
| Unsatisfying, as a victory | 26 |
| Unsaturated hydrocarbon | 23 |
| Unsavory MTV cartoon duo | 24 |
| Unsavory pair of options | 24 |
| Unsavory-sounding Cajun side | 28 |
| Unscheduled performance | 23 |
| Unscheduled, so far (Abbr.) | 27 |
| Unscholarly contraction | 23 |
| Unschooled, as an artist | 24 |
| Unscientific human grouping | 27 |
| Unscientific procedure | 22 |
| Unscramble a cryptogram | 23 |
| Unscripted comedy, for short | 28 |
| Unscripted theater, briefly | 27 |
| Unscrupulous one, perhaps | 25 |
| Unscrupulous operator? | 22 |
| Unscrupulous realty agent | 25 |
| Unscrupulous recruitment | 24 |
| Unscrupulous, as a business | 27 |
| Unscrupulous, as a fighter | 26 |
| Unseal, to Shakespeare | 22 |
| Unseen for the trees? | 22 |
| Unseen area of the moon | 23 |
| Unseen bit of flirting? | 23 |
| Unseen circus performer | 23 |
| Unseen compound, often | 22 |
| Unseen danger for boaters | 25 |
| Unseen Odets title character | 28 |
| Unseen part of a bonbon | 23 |
| Unseen part of the moon | 23 |
| Unseen title character | 22 |
| Unseld of basketball fame | 26 |
| Unseld of basketball fame | 25 |
| Unselfish devotion to others | 28 |
| Unsentimental practicality | 26 |
| Unsentimentally practical | 25 |
| Unser's "thing" | 29 |
| Unsettled, as questions | 23 |
| Unshakable behavior pattern | 27 |
| Unshown part of a stud hand | 27 |
| Unsightly in a certain way | 27 |
| Unsightly citrus fruit? | 23 |
| Unsightly eyelid problem | 24 |
| Unsightly sight on a sedan | 26 |
| Unsightly thing in a bathtub | 28 |
| Unsinkable baby holder? | 23 |
| Unsinkable white sheet | 22 |
| Unsociable and brooding | 23 |
| Unsolicited manuscript enc. | 27 |
| Unsolicited manuscripts | 23 |
| Unsolicited ms. enclosure | 25 |
| Unsolicited MS., perhaps | 24 |
| Unsolicited-mail addressee | 26 |
| Unsolved burglary, e.g. | 23 |
| Unsolved cases, in TV lingo | 27 |
| Unsolved mystery, maybe | 23 |
| Unsophisticated person | 22 |
| Unsophisticated quality | 23 |
| Unsophisticated, as humor | 25 |
| Unsound, as an argument | 23 |
| Unspecific brief period | 23 |
| Unspecific ordinal number | 25 |
| Unspecific recipe amount | 24 |
| Unspecific recipe phrase | 24 |
| Unspecific recipe quantity | 26 |
| Unspecific vowel sound | 22 |
| Unspecified alternative | 23 |
| Unspecified degrees, in math | 28 |
| Unspecified high degree | 23 |
| Unspecified individual | 22 |
| Unspecified numerical power | 27 |
| Unspecified philosophies | 24 |
| Unspecified, degreewise | 23 |
| Unspoken 'Alas!' | 24 |
| Unspoken 'alas' | 23 |
| Unspoken 'I dunno' | 26 |
| Unspoken but understood | 23 |
| Unspoken, as an approval | 24 |
| Unspoken, as an understanding | 29 |
| Unspoken, but understood | 24 |
| Unsportsmanlike action | 22 |
| Unsportsmanlike conduct | 23 |
| Unsportsmanlike sportsman | 25 |
| Unstable dessert product | 24 |
| Unstable meteorologist? | 23 |
| Unstable nuclear particle | 25 |
| Unstable person, slangily | 25 |
| Unstable subatomic particle | 27 |