| Word | Meaning | Occurrences |
|---|---|---|
| unicornis | one-horned, unicorn | 5 |
| unicus | only, sole | 14 |
| unigenitus | only-begotten | 20 |
| unio | unity, union | 1 |
| unitas | oneness, unity | 4 |
| universitas | whole, aggregate | 3 |
| universus | all, whole | 1006 |
| unus | one | 1782 |
| upupa | hoopoe | 2 |
| ur | Ur | 4 |
| urai | Urai | 1 |
| urbanus | Urbanus | 2 |
| urbs | city | 380 |
| urceus | pitcher, water pot | 6 |
| uredo | blast, blight | 2 |
| urgeo | to press, be urgent | 10 |
| uri | Uri | 8 |
| uria | Uria, Uriah | 1 |
| urias | Urias, Uriah | 40 |
| uriel | Uriel | 4 |
| urina | urine | 2 |
| urna | vessel for drawing water, water pot | 4 |
| uro | to burn | 27 |
| ursa | she-bear | 3 |
| ursus | bear | 15 |
| urtica | nettle, stinging nettle | 4 |
| us | us | 1 |
| usque | up to, as far as | 1315 |
| usquequaque | continually, everywhere | 5 |
| usquequo | how long, until | 59 |
| usura | interest, usury | 18 |
| usurpo | to seize | 2 |
| usus | use, enjoyment | 46 |
| ut | that, when | 5705 |
| utcumque | somehow, in one way or another | 1 |
| utensilis | useful, utensil | 8 |
| uter | bag, bottle | 35 |
| uterinus | born of the same mother | 2 |
| uterque | each of two, both | 149 |
| uterus | womb, belly | 79 |