Utile per inutile non vitiatur.
A useful thing is not to be vitiated by a useless thing.
Utlagatus non potest placitare.
An outlawed person cannot make a will.
Uxor et maritus unum in lege.
Wife and husband are one in law.
Uxor in mariti potestate cum sit non obnoxia est in causis reatus minoribus; aliter in majoribus proditione et homicidio.
The wife, as she is under the power of her husband, is not liable in the lesser cases of accusation; it is otherwise in the greater cases, such as treason and homicide.
Uxor sub potestate viri.
A wife is under the power of her husband.