| Untainted by corruption | 23 |
| Unswervingly committed | 22 |
| Unswerving in allegiance | 24 |
| Unsurpassingly unoriginal | 25 |
| Unsurpassed, as in sports | 25 |
| Unsurpassed up to the present | 29 |
| Unsure "Uh-uh" | 24 |
| Unsuitable for the kids | 23 |
| Unsuitable for surgery | 22 |
| Unsuitable for parades | 22 |
| Unsuitable for mixed company | 28 |
| Unsuccessful, as batters | 24 |
| Unsuccessful, as a mission | 26 |
| Unsuccessful trophy seeker | 26 |
| Unsuccessful performance | 24 |
| Unsuccessful participant | 24 |
| Unsuccessful liquor buyers | 26 |
| Unsuccessful invader of India | 29 |
| Unsuccessful contenders | 23 |
| Unsuccessful 1957 debut | 23 |
| Unsuccessful '50s Ford | 26 |
| Unsubstantiated theories? | 25 |
| Unstressed vowel symbol | 23 |
| Unstressed vowel sounds | 23 |
| Unstressed vowel sound | 22 |
| Unstressed midcentral vowel | 27 |
| Unstrained quality, to Portia | 29 |
| Unstoppable, as a plan | 22 |
| Unstoppable determination | 25 |
| Unstimulating position | 22 |
| Unsteady, as from old age | 25 |
| Unsteady, as a relationship | 27 |
| Unsteady walker, maybe | 22 |
| Unsteady on one's feet | 26 |
| Unstable, metaphorically | 24 |
| Unstable symptom of nerves | 26 |
| Unstable subatomic particles | 28 |
| Unstable subatomic particle | 27 |
| Unstable person, slangily | 25 |
| Unstable nuclear particle | 25 |
| Unstable meteorologist? | 23 |
| Unstable dessert product | 24 |
| Unsportsmanlike sportsman | 25 |
| Unsportsmanlike conduct | 23 |
| Unsportsmanlike action | 22 |
| Unspoken, but understood | 24 |
| Unspoken, as an understanding | 29 |
| Unspoken, as an approval | 24 |
| Unspoken but understood | 23 |
| Unspoken 'I dunno' | 26 |
| Unspoken 'alas' | 23 |
| Unspoken 'Alas!' | 24 |
| Unspecified, degreewise | 23 |
| Unspecified philosophies | 24 |
| Unspecified numerical power | 27 |
| Unspecified individual | 22 |
| Unspecified high degree | 23 |
| Unspecified degrees, in math | 28 |
| Unspecified alternative | 23 |
| Unspecific vowel sound | 22 |
| Unspecific recipe quantity | 26 |
| Unspecific recipe phrase | 24 |
| Unspecific recipe amount | 24 |
| Unspecific ordinal number | 25 |
| Unspecific brief period | 23 |
| Unsound, as an argument | 23 |
| Unsophisticated, as humor | 25 |
| Unsophisticated quality | 23 |
| Unsophisticated person | 22 |
| Unsolved mystery, maybe | 23 |
| Unsolved cases, in TV lingo | 27 |
| Unsolved burglary, e.g. | 23 |
| Unsolicited-mail addressee | 26 |
| Unsolicited MS., perhaps | 24 |
| Unsolicited ms. enclosure | 25 |
| Unsolicited manuscripts | 23 |
| Unsolicited manuscript enc. | 27 |
| Unsociable and brooding | 23 |
| Unsinkable white sheet | 22 |
| Unsinkable baby holder? | 23 |
| Unsightly thing in a bathtub | 28 |
| Unsightly sight on a sedan | 26 |
| Unsightly eyelid problem | 24 |
| Unsightly citrus fruit? | 23 |
| Unsightly in a certain way | 27 |
| Unshown part of a stud hand | 27 |
| Unshakable behavior pattern | 27 |
| Unsettled, as questions | 23 |
| Unser's "thing" | 29 |
| Unsentimentally practical | 25 |
| Unsentimental practicality | 26 |
| Unselfish devotion to others | 28 |
| Unseld of basketball fame | 25 |
| Unseld of basketball fame | 26 |
| Unseen title character | 22 |
| Unseen part of the moon | 23 |
| Unseen part of a bonbon | 23 |
| Unseen Odets title character | 28 |
| Unseen danger for boaters | 25 |
| Unseen compound, often | 22 |