U ugly, evil, hateful, and base uncertain, questionable, erroneous, and mistaken unctuous, shrill, brisk, and demonstrative [unctuous = exaggerated, insincere] unhappy, unfortunate, distressed, and disastrous uninteresting, lifeless, obscure, and commonplace unity, aggressiveness, efficiency, and force unkind, severe, oppressive, and callous unpractical, childish, slipshod, and silly unreasonable, foolish, excessive, and absurd unrivaled, unequaled, incomparable, and matchless upright, high-minded, brave, and liberal urgent, important, immediate, and imperative usage, custom, habit, and practise |