| Unit system in physics | 22 |
| Unit used in electromagnetism | 29 |
| Unit whose symbol is an omega | 29 |
| Unitard accompanier, perhaps | 28 |
| Unite after a break, in a way | 29 |
| United -- College Fund | 22 |
| United Airlines affiliate | 25 |
| United and Allied, e.g. | 23 |
| United Arab Emirates member | 27 |
| United code-share partner | 25 |
| United competitor: Abbr. | 24 |
| United Farm Workers leader | 26 |
| United Feature Synd. partner | 28 |
| United in holy matrimony | 24 |
| United in opinion: abbr. | 24 |
| United Kingdom citizen | 22 |
| United Kingdom component | 24 |
| United Kingdom currency | 23 |
| United maintenance group | 24 |
| United Nations agency (Abbr.) | 29 |
| United Nations Day mo. | 22 |
| United Nations Day's mo. | 28 |
| United Nations display | 22 |
| United Nations division | 23 |
| United Nations gathering | 24 |
| United Nations get-together | 27 |
| United Nations Plaza array | 26 |
| United Nations Plaza display | 28 |
| United Nations' goal | 24 |
| United nations, perhaps | 23 |
| United overseer: Abbr. | 22 |
| United regulator: Abbr. | 23 |
| United regulators: Abbr. | 24 |
| United States foe of 1898 | 25 |
| United States frontiersman | 26 |
| United States Open site | 23 |
| United with a blowtorch | 23 |
| United ___ College Fund | 23 |
| United ___ Day (October 24) | 27 |
| United's are friendly | 25 |
| UnitedHealth Group rival | 24 |
| UnitedHealthcare rival | 22 |
| Units equal to 0.1 microjoule | 29 |
| Units equal to 0.3527 ounces | 28 |
| Units equal to 10,000 gauss | 27 |
| Units for Boris Becker | 22 |
| Units for electricians | 22 |
| Units for exercise machines | 27 |
| Units for lease, for short | 26 |
| Units for measuring gold | 24 |
| Units for measuring wire | 24 |
| Units in a 2011 debt crisis | 27 |
| Units in a coll. curriculum | 27 |
| Units in a high rise (Abbr.) | 28 |
| Units in nuclear physics | 24 |
| Units in physics class | 22 |
| Units in real estate ads | 24 |
| Units in the cgs system | 23 |
| Units now called siemens | 24 |
| Units of "Time" | 25 |
| Units of 0's and 1's | 28 |
| Units of 100 ergs/gram | 22 |
| Units of 43,560 square feet | 27 |
| Units of a chain with links? | 28 |
| Units of a dangerous dosage | 27 |
| Units of a school org. | 22 |
| Units of angular measurement | 28 |
| Units of appreciation? | 22 |
| Units of chains x furlongs | 26 |
| Units of computer memory | 24 |
| Units of currency in Denmark | 28 |
| Units of distance for ships | 27 |
| Units of elec. conductance | 26 |
| Units of elec. current | 22 |
| Units of elec. resistance | 25 |
| Units of electric current | 25 |
| Units of electric resistance | 28 |
| Units of electrical current | 27 |
| Units of electrical force | 25 |
| Units of electromotive force | 28 |
| Units of energy absorbed | 24 |
| Units of fineness for yarns | 27 |
| Units of geologic time | 22 |
| Units of Iranian currency | 25 |
| Units of length, in physics | 27 |
| Units of length: Abbr. | 22 |
| Units of luminous intensity | 27 |
| Units of magnetic flux | 22 |
| Units of measure, in printing | 29 |
| Units of measure: Abbr. | 23 |
| Units of money in Bulgaria | 26 |
| Units of money in Libya | 23 |
| Units of nautical speed | 23 |
| Units of radiation absorbed | 27 |
| Units of radiation dosage | 25 |
| Units of self-importance | 24 |
| Units of sound-wave intensity | 29 |
| Units of syllabic length | 24 |
| Units of time, in prosody | 25 |
| Units of volume: Abbr. | 22 |