English–Spanish dictionary: U
- ubiquitous
- ufo
- ugly
- ukrainian
- ultimatum
- ultrasound scan
- umayyad
- umbilical
- umbrella
- unable
- unanimity
- unanimous
- unavoidable
- unbearable
- unbelievable
- unborn
- unbreakable
- uncertain
- uncertainty
- unchanged
- unchanging
- uncle
- unclear
- uncomfortable
- unconscious
- unconsciousness
- uncooked
- uncultured
- undecided
- undeniable
- under
- underdeveloped
- underground
- underlying
- undersecretary
- understand
- understandable
- understanding
- undesirable
- undo
- unease
- uneasy
- unemployment
- unequal
- uneven
- unexpected
- unexpectedly
- unexplainable
- unfair
- unfaithful
- unfavorable
- unfinished
- unfold
- unforgettable
- unforgivable
- unforgiving
- unfortunate
- unfriendly
- unhappiness
- unhappy
- uniform
- unintentional
- uninterrupted
- union
- union member
- union-related
- unit
- unite
- unity
- universal
- universe
- university
- university admissions exam
- university graduate
- university president
- university student
- unlicensed practice
- unlink
- unmask
- unmoved
- unnecessary
- unpick
- unpleasant
- unplug
- unpopular
- unpredictable
- unproductive
- unpublished
- unpunctual
- unreachable
- unreal
- unrecognizable
- unredeemed
- unresponsive
- unsettle
- unstable
- unstoppable
- unsustainable
- unthinkable
- untie
- until
- unusual
- unwind
- unworthy
- unwrap
- up
- upbringing
- update
- upper body
- uppercase
- uprising
- uproar
- ups and downs
- upset
- upset stomach
- upturned
- urban
- urban planning
- urbanize
- urge
- urgent
- urgent matter
- uruguayan
- us
- usable
- use
- use the informal you
- use up
- useful
- usefulness
- useless
- user
- usual
- usufruct
- usurp
- utensil
- utilization
- utmost
- utopia