Unda, a wave; undulate, inundation.
Unguo (unct-um), I anoint; unguent, unctuous, ointment.
Unus, one; unity, union.
Urbs, a city; urban, suburb.
Utor (us-us), I use; use, utensil, usury.
Vacca, a cow; vaccinate.
Valeo, I am strong; valour, valiant, prevail.
Vanus, empty; vain, vanish, vanity.
Vas (vās-is), a vessel; vase, vascular, vessel.
Veho (vect-um), I carry; vehicle, convey.