abhorrent, abominable, acerbic, acid, acrid, acrimonious, acute, adamant, adamantine, annoying, awful, awkward, baffling, beastly, bothersome, burdensome, callous, coarse, crabbed, cross-grained, cumbersome, detestable, disagreeable, disconcerting, disgusting, distasteful, edge, execrable, favoured, firm, foul, gnarled, gnarly, grainy, grievous, gruff, hackly, hard, hard-boiled, hard-core, hardboiled,
hardcore, harsh, hideous, horny, hot, hustler, importunate, incisive, inclement, inconvenient, irksome, irritating, keen, keener, keenest, knotty, landed, loath, loathsome, lousy, messy, nagging, nasty, nauseous, nippy, no-good, noisome, nonplussing, nonviable, nuisance, obnoxious, odious, onerous, oppressive, painful, peppery, perplexing, perplexity, pesky, piercing, piggish, poignant, pointed, poisonous, pungent, ragged, repellent, repugnant, repulsive, revolting, rigid, rough, rugged, sad, scabrous, seamy, severe, sharp, short, shrewd, shrill, sickish, silent, snappish, sordid, sorry, spiteful, steep, stiff, strident, stringent, strong, tangy, tart, tasteless, tease, tiresome, tough, troublesome, uncongenial, uneasy, unfriendly, ungracious, unkind, unpalatable, unpleasant, unsavoury, unsightly, uphill, vexing, vile, violent, worried, worrier, worrisome, wretched