| Unit of volume | 14 |
| Unit of value in Ankara | 23 |
| Unit of truth? | 14 |
| Unit of tone pitch | 18 |
| Unit of tobacco | 15 |
| Unit of Time: Abbr. | 19 |
| Unit of time, in prosody | 24 |
| Unit of time, abbr. | 19 |
| Unit of Time | 12 |
| Unit of the UN | 14 |
| Unit of the Green Berets | 24 |
| Unit of syllabic length | 23 |
| Unit of surface measurement | 27 |
| Unit of sunshine | 16 |
| Unit of sugar or coal | 21 |
| Unit of sugar | 13 |
| Unit of storage capacity, informally | 36 |
| Unit of storage | 15 |
| Unit of stock | 13 |
| Unit of star measurement | 24 |
| Unit of stage script | 20 |
| Unit of speed at sea | 20 |
| Unit of speech | 14 |
| UniT of sound | 13 |
| Unit of sleep? | 14 |
| Unit of scouts | 14 |
| Unit of retaliation, Biblically | 31 |
| Unit of resolution | 18 |
| Unit of resistance | 18 |
| Unit of reluctance | 18 |
| Unit of refractive power of a lens | 34 |
| Unit of reality? | 16 |
| Unit of real estate | 19 |
| Unit of ranch land | 18 |
| Unit of RAM, for short | 22 |
| Unit of RAM | 11 |
| Unit of rain | 12 |
| Unit of radioactivity | 21 |
| Unit of radio frequency: Abbr. | 30 |
| Unit of radiation exposure | 26 |
| Unit of radiation | 17 |
| Unit of quantum information | 27 |
| Unit of quantity: Abbr. | 23 |
| Unit of purity | 14 |
| Unit of punishment at sea | 25 |
| Unit of punishment | 18 |
| Unit of progress | 16 |
| Unit of professional conduct | 28 |
| Unit of prevention | 18 |
| Unit of pressure: Abbr. | 23 |
| Unit of pressure (Abbr.) | 24 |
| Unit of pressure | 16 |
| Unit of power, for short | 24 |
| Unit of power ratio | 19 |
| Unit of power | 13 |
| Unit of potential difference | 28 |
| Unit of play in squash | 22 |
| Unit of petrol | 14 |
| Unit of perspiration | 20 |
| Unit of pearls | 14 |
| Unit of parsley or thyme | 24 |
| Unit of parsley | 15 |
| Unit of pain | 12 |
| Unit of orthodoxy | 17 |
| Unit of optical power of a lens | 31 |
| Unit of online popularity | 25 |
| Unit of one cycle a second | 26 |
| Unit of oil production: Abbr. | 29 |
| Unit of oil production, briefly | 31 |
| Unit of ocular relief | 21 |
| Unit of noise | 13 |
| Unit of nautical time | 21 |
| Unit of nautical displacement | 29 |
| Unit of metrical time | 21 |
| Unit of metric volume | 21 |
| Unit of memory | 14 |
| Unit of medicine | 16 |
| Unit of measurement consisting of 72 days, in modern-day slang | 62 |
| Unit of measurement | 19 |
| Unit of measure: Abbr. | 22 |
| Unit of measure in a garage? | 28 |
| Unit of measure equal to 63 gallons | 35 |
| Unit of measure | 15 |
| Unit of meas. that's often leveled | 38 |
| Unit of matter: Abbr. | 21 |
| Unit of matter | 14 |
| Unit of mass, briefly | 21 |
| Unit of mass transit | 20 |
| Unit of magnetism | 17 |
| Unit of magnetic intensity | 26 |
| Unit of magnetic inductivity | 28 |
| Unit of magnetic induction | 26 |
| Unit of magnetic flux named for a German physicist | 50 |
| Unit of magnetic flux density | 29 |
| Unit of magnetic flux | 21 |
| Unit of magnetic field strength | 31 |
| Unit of luminous intensity | 26 |
| Unit of luminous flux | 21 |
| Unit of luminance | 17 |
| Unit of loudness | 16 |