| Unhealthful skyline obscurer | 28 |
| Used a carpenter's plane | 28 |
| U.S. force in Vietnam: abbr. | 28 |
| Under Helios's influence | 28 |
| Underwater-mine finder, e.g. | 28 |
| Underwater detection systems | 28 |
| U.S./Canada's ___ Canals | 28 |
| Urgent transmission of sorts | 28 |
| Unoiled robot's problem? | 28 |
| Ultra-fast flyers, for short | 28 |
| University in Silicon Valley | 28 |
| USAF plane for short runways | 28 |
| U.S. Open tennis champ: 1966 | 28 |
| Use the overhead compartment | 28 |
| Usually you try to hit yours | 28 |
| Unexpected acts of hostility | 28 |
| Underhanded change, slangily | 28 |
| Unit at the top of a browser | 28 |
| Used Petruchio's methods | 28 |
| Unhealthy part of cigarettes | 28 |
| Uncertain scheduling letters | 28 |
| Undecided's abbreviation | 28 |
| US Airways headquarters city | 28 |
| Untoppable gymnastics scores | 28 |
| Unhappy home inspection find | 28 |
| Unit of magnetic inductivity | 28 |
| U ___ ('60s U.N. leader) | 28 |
| Uncapitalized word in titles | 28 |
| Up to the time that, briefly | 28 |
| Up ___ good (making trouble) | 28 |
| Uris novel or Hitchcock film | 28 |
| Until the end of a pregnancy | 28 |
| Unflattering Nixon sobriquet | 28 |
| Utterance of a finger wagger | 28 |
| Unflattering word for a ship | 28 |
| University of Arizona locale | 28 |
| University in Medford, Mass. | 28 |
| University at Medford, Mass. | 28 |
| Unitard accompanier, perhaps | 28 |
| Used a microblogging service | 28 |
| Unpleasant rules to be under | 28 |
| USSR plane, in some theories | 28 |
| Unfilled part of a wine cask | 28 |
| U.S.S.R.'s ___ Mountains | 28 |
| U.N. Security Council member | 28 |
| Unconscionably high interest | 28 |
| Unborn, after "in" | 28 |
| Uris's "QB __" | 28 |
| U.S.A. radio initials abroad | 28 |
| U.S. govt. broadcast service | 28 |
| Unit of potential difference | 28 |
| Unit of electrical potential | 28 |
| Uncle Tupelo spinoff Son ___ | 28 |
| Upper --- (now Burkina Faso) | 28 |
| Upper ___ (now Burkina Faso) | 28 |
| Units of electromotive force | 28 |
| Used the children's pool | 28 |
| Unit often preceded by kilo- | 28 |
| Unconvincing, as an argument | 28 |
| Utterance from Reagan mimics | 28 |
| User-edited online reference | 28 |
| Unlucky number for Augustus? | 28 |
| Unix correspondence software | 28 |
| Upward-flowing plant vessels | 28 |
| Underling's acquiescence | 28 |
| Unlikely sighting on Everest | 28 |
| Underground mag of the 1960s | 28 |
| Utah's ___ National Park | 28 |
| University of Akron athletes | 28 |
| University professor, for one | 29 |
| Unpopular spots for teenagers | 29 |
| Unimaginably long time (Var.) | 29 |
| Union inits. starting in 1886 | 29 |
| Under way, to Sherlock Holmes | 29 |
| Used "Say Days ___" | 29 |
| Unsurpassed up to the present | 29 |
| Uncaring about right or wrong | 29 |
| U.S.S.R.-China river boundary | 29 |
| Untraceable author, for short | 29 |
| Useful piece of code, briefly | 29 |
| Uzbek's irrigation source | 29 |
| U.S.S.R. inland body of water | 29 |
| Usually, after "as" | 29 |
| U.S. Dept. of Justice raiders | 29 |
| Unkeyed, as some compositions | 29 |
| Utterly unstocked, as shelves | 29 |
| Upholstered semicircular seat | 29 |
| Usually it's not included | 29 |
| Unit of oil production: Abbr. | 29 |
| Unlikely place to find a star | 29 |
| U.C.L.A. quarterback, perhaps | 29 |
| U.S. editor: 1863–1930 | 29 |
| Unhappy bleacherite, at times | 29 |
| Upper edge of a hollow object | 29 |
| Used the highest oven setting | 29 |
| U.S. vice president 1801-1805 | 29 |
| Unofficial Seabees' motto | 29 |
| Unlikely marching-band member | 29 |
| Use your maxilla and mandible | 29 |
| Uniformed person giving signs | 29 |