- ubiquitous
- ugly
- ulcer
- ultimate
- umbrage
- umpire
- unaffected
- unanimous
- unassuming
- unbecoming
- unbend
- uncanny
- uncommitted
- unconscionable
- unconscious
- uncouth
- unctuous
- underbid
- undercut
- underdog
- underscore
- undermine
- underhanded
- undergird
- underestimated
- underling
- underlying
- underplay
- underrate
- understate
- understated
- understatement
- understudy
- underutilized
- underwrite
- undeserved
- undesirable
- undirected
- unearth
- unearthly
- unenlightened
- unexceptionable
- unfailing
- unfasten
- unfeigned
- unflappable
- unfold
- unfounded
- ungainly
- ungrudging
- unguent
- unicorn
- unidimensional
- unification
- uniform
- unify
- unimpassioned
- unimpeachable
- uninitiated
- unique
- univocal
- unjustified
- unjustly
- unkempt
- unleash
- unmitigated
- unmoved
- unnoticed
- unobtrusive
- unpalatable
- unprecedented
- unpremeditated
- unprepossessing
- unpretentious
- unprincipled
- unproductive
- unprovoked
- unqualified
- unravel
- unregenerate
- unregulated
- untapped
- unremitting
- unrepentant
- unrequited
- unreserved
- unscathed
- unscented
- unscrupulous
- unscrupulousness
- unseemly
- unsettle
- unsettling
- unsound
- unspoiled
- unspotted
- unstinting
- unsubstantiated
- unthreatening
- untimely
- upgrade
- untold
- untoward
- untutored
- unwarranted
- unwieldy
- unwitting
- unwonted
- unworldly
- upbraid
- upheaval
- uphold
- upright
- uproar
- uproarious
- upstage
- upswing
- urgent
- usurp
- usury
- utilitarian
- utilize
- utopia
- utopian
- utter
- ulcerate
- ulterior
- ultramundane
- unbidden
- unbridled
- uncooperative
- undisputable
- undulate
- unexceptional
- unguarded
- unilateral
- unison
- upfront
- upstart
- upsurge
- uptight
- urchin
- ursine
- utensil
- uxorious
- unbosom
成人英语GRE单词单词大全〔U 〕课程包含146个英语单词词汇。