abrasive, abrupt, acerbic, acrimonious, aggressive, angriest, angry, annoying, argumentation, argumentative, austere, awkward, bad-tempered, baffling, bilious, black, bleak, bluff, blunt, bothersome, brusque, bumpy, burdensome, cantankerous, cheerless, coarse, contentious, cross-grained, crude, cumbersome, curt, cutting, dark, dejected, dim, disagreeable, disconcerting, disconsolate, dismal, distasteful, dreary, dull, dulled, dusky, factious, farouche, forbidding, gloomy, glum, gnarled, gnarly, grainy, grave, grievous, grim, gruff, grumpy, harsh, hustler, ill-natured, importunate, incondite, inconsistent, inconvenient, inequitable, irascible, irate, irksome, irregular, irritable, irritating, jerky, joyless, jumpy, knotty, lugubrious, lurid, messy, morose, mournful, murky, nagging, nasty, noisome, nuisance, obnoxious, obscure, onerous, oppressive, painful, perplexing, perplexity, pesky, quarrelsome, querulous, ragged, randy, rough, rugged, sad, scabrous, scathing, seamy, sepulchral, snappish, snappy, sombre, sorry, spiteful, sulky, sullen, surly, taciturn, tasteless, tease, testy, tiresome, troublesome, uneasy, unequal, uneven, unfriendly, unpalatable, unpleasant, unsavoury, unsteady, untried,
uphill, vexing, worried, worrier, worrisome, wrathful, wroth