U Set1

ubiquitous	adj. (seeming to be) present everywhere or in several places at the same time
ulcer	n. open sore containing poisonous matter on the outside of the body or on the surface of an internal organ
ulterior	adj. beyond what is obvious or admitted
ultimate	adj. beyond which no other exists or is possible; last or final
ultimatum	n. final demand or statement of terms to be accepted without discussion, eg one sent to a foreign government and threatening war if the conditions are not accepted
umbrage	n. give `umbrage; take `umbrage (at sth) (fml or joc ) (make sb) feel offended or slighted
unaccountable	adj. that cannot be explained or accounted for
unanimity	n. complete agreement or unity
unassailable	adj. that cannot be attacked or conquered
unassuaged
unassuming	adj. not drawing attention to oneself or to one's merits or rank; modest
unbridled	adj. not controlled or checked
uncanny	adj. unnatural
unceremonious	adj. without proper formality or dignity
unconscionable	adj. unreasonable or excessive
uncouth	adj. rough, awkward or ill-mannered; not refined ,
unction	n. action of anointing with oil as a religious rite
unctuous	adj. insincerelyearnest or flattering, esp in an oily way
undergird	strengthen the base of
underhand	adj. done or doing things in a sly or secret way; deceitful
undermine	v. make a hollow or tunnel beneath (sth); weaken at the base
underscore	v. = underline
understate	v. state or express in a very controlled way
undertaker	n. person whose business is to prepare the dead for burial or cremation and arrange funerals
undulate	v. have a wave-like movement or appearance
undulating	[ undulate: ] to move or cause to move in waves or as if in waves
unearth	v. ~ sth uncover or obtain sth from the ground by digging
unearthly	adj. supernatural or mysterious or frightening
unequivocal	adj. having only one possible meaning; clear and unmistakeable
unerringly	adv.
unexceptionable	adj. that cannot be criticized; entirely satisfactory
unfaltering	steadfast
unfeigned	adj. not pretended; genuine or sincere
unfetter	to release from fetters, bonds, etc.
unfledged	immature
unfrock	v. dismiss from the priesthood
ungainly	adj. clumsy or awkward; not graceful
unguent	ointment
uniformity	sameness; consistency; monotony
unilateral	adj. done by or affecting one person, group, country, etc and not another; one-sided
unimpeachable	adj. that cannot be doubted or questioned; trustworthy
uninhibited	unrepressed
unintimating
unique	adj. being the only one of its type
unison	n. in unison (with sb/sth) sounding or singing together the same musical note (or the same note in different octaves)
universal	adj. of, belonging to, affecting or done by all people or things in the world or in a particular group
unkempt	adj. not kept tidy; looking dishevelled or neglected
unmitigated	adj. having no accompanying advantages whatever; complete; absolute
unobtrusive	adj. not too obvious or easily noticeable; not drawing attention to itself or himself; discreet
unprecedented	adj. without precedent; never having happened, been done or been known before
unprepossessing	adj. not attractive or appealing in appearance
unravel	v. (cause sth woven, knotted or tangled to) separate into strands
unregenerate	unrepentant; unreformed
unrequited	adj. (esp of love) not returned or rewarded
unruly	adj. not easy to control or discipline; disorderly
unsavory	distasteful; morally offensive
unscathed	adj. not injured or hurt; unharmed
unseemly	adj. (of behaviour,etc) not proper or seemly; unbecoming
unsightly	adj. not pleasant to look at; ugly
unsullied
untenable	adj. that cannot be defended
untoward	adj. inconvenient or unfortunate; awkward
unwarranted	adj. unjustified or unauthorized
unwieldy	adj. awkward to move or control because of its shape, size or weight
unwitting	adj. not knowing or aware
unwonted	adj. not customary or usual
upbraid	v. ~ sb (dated or fml ) scold or reproach sb
upright	adj. in a vertical position; erect
uproar	n. noise and excitement or anger; tumult
uproarious	adj. very noisy or high-spirited
upshot	n. the ~ the final result or outcome
urbane	adj. having or showing refined manners, smooth elegance and sophistication
urchin	n. (esp dated ) mischievous or naughty child, esp a boy
urge	v. drive forcibly or hurry in a certain direction
urgent	adj. needing immediate attention, action or decision
ursine	bearlike; pertaining to a bear
usage	n. manner of using sth; treatment
usurp	v. take (sb's power, right, position) wrongfully or by force
usury	n. (lending of money at) excessively high interest
utopia	n. imaginary place or state of things in which everything is perfect
uxorious	adj. excessively fond of one's wife