| Unique item or person | 21 |
| Unique individual | 17 |
| Unique identifier using the five vowels | 39 |
| Unique identifier for dogs | 26 |
| Unique guy | 10 |
| Unique folks | 12 |
| Unique fellow | 13 |
| Unique feature of the Green Bay Packers | 39 |
| Unique entity | 13 |
| Unique character | 16 |
| Unique button in 007's Aston Martin | 39 |
| Unique birds | 12 |
| Unique ancient tongue of SW Europe | 34 |
| Unique 1960's TV star | 25 |
| Unique | 6 |
| Unipodal whaler | 15 |
| Unipodal | 8 |
| Unions, collectively | 20 |
| Unions of sorts | 15 |
| Unions of a sort | 16 |
| Unions in "Monsoon Wedding" and many other romantic Bollywood movies | 78 |
| Unions | 6 |
| Unionless factories | 19 |
| Unionizes, in a way | 19 |
| Unionized driver | 16 |
| Unionize? | 9 |
| Unionize, so to speak? | 22 |
| Unionize | 8 |
| Unionist's bane | 19 |
| Unionist Chavez | 15 |
| Uniondale skaters | 17 |
| Union: third stage | 18 |
| Union: second stage | 19 |
| Union: last stage | 17 |
| Union: first stage | 18 |
| Union: Abbr. | 12 |
| Union-vote facilitator | 22 |
| Union-starting phrase | 21 |
| Union-opposing grp. | 19 |
| Union-mgmt. dispute watchdog | 28 |
| Union-management agcy. | 22 |
| Union-forming phrase | 20 |
| Union-contract stat | 19 |
| Union-busting type | 18 |
| Union-busting grp.? | 19 |
| Union, of a sort | 16 |
| Union, N.J. college | 19 |
| Union, in L.A. or D.C. | 22 |
| Union, in DC | 12 |
| Union, in D.C., for one | 23 |
| Union, in D.C. | 14 |
| Union, e.g.: Abbr. | 18 |
| Union, e.g. | 11 |
| Union's minimum wage | 24 |
| Union's foes | 16 |
| Union's contract demand? | 28 |
| Union's collection | 22 |
| Union's bane | 16 |
| Union ___: Abbr. | 16 |
| Union ___ (Dow Chemical subsidiary) | 35 |
| Union ___ | 9 |
| Union __ | 8 |
| Union work ploy | 15 |
| Union words | 11 |
| Union with a Dropout Prevention center | 38 |
| Union with 3.2 mil. members | 27 |
| Union with 3+ million members, in brief | 39 |
| Union with 2.7 mil. members | 27 |
| Union with 2 1/2 mil. members | 29 |
| Union whose largest locals are in L.A. and N.Y.C. | 49 |
| Union wear | 10 |
| Union wage | 10 |
| Union VIP | 9 |
| Union vehicle? | 14 |
| Union V.I.P. | 12 |
| Union units | 11 |
| Union unit | 10 |
| Union union, briefly | 20 |
| Union underminer | 16 |
| Union tune sung by Baez at Woodstock | 36 |
| Union topic | 11 |
| Union title, often | 18 |
| Union that merged with SAG in 2012 | 34 |
| Union that doesn't charge dues | 34 |
| Union that didn't live long to regret endorsing Ronald Reagan in 1980 | 73 |
| Union term | 10 |
| Union targets | 13 |
| Union target | 12 |
| Union symbol? | 13 |
| Union symbol | 12 |
| Union supporter? | 16 |
| Union supporter | 15 |
| Union suit? | 11 |
| Union suit wearer? | 18 |
| Union strikers | 14 |
| Union steward's domain | 26 |
| Union station? | 14 |
| Union starters | 14 |
| Union Sta. users | 16 |
| Union Sta. traffic | 18 |