单词

ubiquitous untimely unthreatening unsubstantiated unstinting unbosom uxorious utensil ursine urchin uptight upsurge upstart unilateral undulate unexceptional unison upfront unguarded undisputable uncooperative unbridled utter unbidden ultramundane ulterior ulcerate utilize usurp urgent upswing utilitarian usury uproarious uproar upstage upright uphold upheaval Utopian upbraid unworldly Utopia unwonted unwitting unwieldy unwarranted untutored upgrade untoward untold unspotted unspoiled unsound unsettle unsettling unseemly unscrupulousness unscrupulous unscented unscathed unreserved unrequited unrepentant unremitting untapped unregulated unregenerate unprovoked unprincipled unpretentious unravel unqualified unproductive unpremeditated unprepossessing unprecedented unpalatable unobtrusive unkempt unnoticed unmoved unmitigated unleash unjustly univocal unimpeachable uniform unimpassioned unjustified unify unique uninitiated unification unidimensional unicorn unguent ungrudging unfounded unfold unflappable ungainly unenlightened unfeigned unfasten unfailing unexceptionable unearthly unearth undirected undesirable undeserved underwrite underutilized understudy understatement understated understate underrate underplay underlying underling underestimated undergird underhanded undermine underscore underdog uncouth undercut underbid unctuous unconscious unconscionable uncommitted uncanny unbend unassuming unanimous unbecoming unaffected umpire umbrage ultimate ulcer ugly utmost usual useless useful used use usage us urge urban upward upset upper upon up-to-date up unusual until unless universe universal unite unit union unfortunate understanding unfair unemployment understand underneath underline undertake underground undergraduate undergo under uncle umbrella uneasy underlie underestimate up to date uncover under control under way under the circumstances utility unity united undo unlimited unlikely unlike unlicensed unlawful United Nations United Kingdom unintentional unfavorable unemployed uneven uneconomical undress undoubtedly undoubted undone undisturbed underwriter undertaking undernourished underbrush unconventional uncertainty unbiased ultraviolet uttermost utterly utterance utilization usher urn urine urgency urbanize upside-down upside uplift unworthy unyielding untie unsuitable unsuccessful unsatisfactory unreasonable unparalleled unnatural unlock unstable universally uniformly ultimately utilise user up to the minute up to scratch up in the air up against under the weather under fire under no circumstances undermentioned unclean undersigned unconditioned untenable unfavourable UN undervalue urbane uproot upbringing unveil unruly unfettered unblemished unattended unanimity ultimatum usher in under pressure under construction unbound hair unaided eye Upper World urban sprawl under favorable conditions uprising upkeep undue undercharge uncalled-for uterus uvula uteritis urticaria urology urinate urinary uretic urethra ureter uremia urea uranium uppermost unintelligible unfeasible unicellular unavoidable umbilicus ultrasonic ultrared