abrupt, acariâtre, accablant, acerbe, acrimonieux, âpre, ardu, aride, atrabilaire, bilieux, bougon, bourru, brusque, cavalier, coléreux, contrariant, désagréable, difficile, disgracieux, endormant, ennuyeux, escarpe, fade, fastidieux, grincheux, grogneur, grognon, grossier, hargneux, hirsute, incommode, inconfortable, ingrat, inhabitable, inhospitalier, inopportun, insipide, invivable, irritable, lassant, maussade, misanthrope, monotone, pénible, raide, rebutant, renfrogné, revêche, rogue, ronchonneur, rude, rustaud, rustre, sauvage, somnifère, soporifique