uncle, tío, m.
understand, to, comprender, entender.
uneasy, inquieto,-a; intranquilo,-a.
unjust, injusto,-a.
unload, to, descargar.
until, hasta (prep.); hasta que (conjunction).
untruth, mentira, f.
up, arriba. (This word is in Spanish very often untranslatable, being included in the meaning of the verb with which it is used; as, to pick ---- , recoger; to look—— , buscar; to get—— , levantarse, etc.)
upside-down, de arriba abajo.
us, nos, nosotros,-as (with prep.).