unbelievably
unbounded
uncertainly
uncertainty
unclean
uncompromising
unconsciousness
uncontrolled
unconventional
undecided
undeniably
underestimated
underlying
undermines
undisputed 无争议的;毫无疑问的;当然的
undoubted
undue
uneasily
unequally
uneven
unfitted
unfo
unidentified
uniformity
universality
universalized
unknowingly
unlawfully
unmarked
unmerciful
unnoticeably
unprofessional
unselfishly
unsociable
unsteady
unsuccessfully
unsuspecting
unsystematic
unthinkable
untidy
untrue
untrustworthy
unwholesome
unworkable
upbringing
upgraded
uprising
urges
usable
usefully
utilization
utter
vacancies
vaguely
valuables
vanished
vehicle
vengeance
venturous
veto
vexation
viable
vibrate
vices
victimize
visional
vividness
vocations
vow
vulgar
weakness
wearied
whim
wholesale
wickedly
willful
withdraw
withering
withhold
withstand
witty
woe
worriedly
worsen
worshiping
worthiness
wrongdoings