| Unofficially off-base | 21 |
| Unofficial, like some university degrees | 40 |
| Unofficial ticket source | 24 |
| Unofficial Seabees' motto | 29 |
| Unofficial promissory note | 26 |
| Unofficial poll | 15 |
| Unofficial news source | 22 |
| Unofficial end of summer | 24 |
| Unofficial discussions | 22 |
| Unofficial currency | 19 |
| Unofficial Aussie anthem | 24 |
| Unofficial advisers of a sort | 29 |
| Unofficial "Main Street" of New York's Chinatown | 62 |
| Unoccupied? | 11 |
| Unoccupied, as time | 19 |
| Unoccupied, as country | 22 |
| Unoccupied, as a theater seat | 29 |
| Unoccupied Middle Easterner, as of last month | 45 |
| Unoccupied | 10 |
| Unobtrusiveness | 15 |
| Unobtrusive, as a ringtone setting | 34 |
| Unobtrusive sound | 17 |
| Unobtrusive signals | 19 |
| Unobtrusive attention getter | 28 |
| Unobtrusive | 11 |
| Unobstructed progress | 21 |
| Unobstructed | 12 |
| Unobservant | 11 |
| Uno, ___, tres | 14 |
| Uno, un, eins, etc. | 19 |
| Uno, por ejemplo | 16 |
| Uno, in Ulm | 11 |
| Uno, for one | 12 |
| Uno, for example | 16 |
| Uno, e.g. | 9 |
| Uno, due, ___ | 13 |
| Uno, due, -- ... | 16 |
| Uno, due, -- | 12 |
| Uno, dos, ___ | 13 |
| Uno, dos, tres, -- ... | 22 |
| Uno, dos, -- | 12 |
| Uno's alternative | 21 |
| Uno y uno | 9 |
| Uno y siete | 11 |
| Uno y due | 9 |
| Uno y dos y tres | 16 |
| Uno y dos | 9 |
| Uno x 3 | 7 |
| Uno tripled | 11 |
| Uno relative | 12 |
| Uno plus uno plus uno | 21 |
| Uno plus uno | 12 |
| Uno plus due | 12 |
| Uno plus dos | 12 |
| Uno or dos, in Spain | 20 |
| Uno or dos | 10 |
| Uno minus uno | 13 |
| Uno less than nueve | 19 |
| Uno is one | 10 |
| Uno follower | 12 |
| Uno e sei | 9 |
| Uno e due | 9 |
| Uno doubled | 11 |
| Uno card | 8 |
| Uno and uno | 11 |
| Uno and others | 14 |
| Uno and due | 11 |
| Uno and dos | 11 |
| Uno and Doblò | 16 |
| Uno + uno + uno | 15 |
| Uno + uno | 9 |
| Uno + due + tre + quattro | 25 |
| Uno + due + tre | 15 |
| Uno + due | 9 |
| Uno + dos | 9 |
| Uno + cuatro | 12 |
| Uno due y tre | 14 |
| Uno due ____ | 14 |
| Uno dos y tres sum | 19 |
| Uno dos y tres | 15 |
| Uno | 3 |
| Unnumbered years | 16 |
| Unnumbered spheres | 18 |
| Unnoticed | 9 |
| Unnominated film with a fuzzy subject? | 38 |
| Unnominated film with a corny plot? | 35 |
| Unnominated film featuring Inspector Clouseau? | 46 |
| Unnominated film about the recipe that got Hans Christian Andersen arrested? | 76 |
| Unnominated film about the cold, hard life of a horn player? | 60 |
| Unnominated film about an average week in Seattle? | 50 |
| Unnominated film about a Southern diner with really tiny portions? | 66 |
| Unnominated film about a guy who dreams of getting cable? | 57 |
| Unnominated film (part of a series) about the making of "War and Peace"? | 82 |
| Unnice comment | 14 |
| Unnewsy news | 12 |
| Unnerving: Var. | 15 |
| Unnerving, perhaps | 18 |
| Unnerving way to hand in your job application | 45 |
| Unnerving subject of an IRS notice | 34 |
| Unnerving look | 14 |