Antonyms for nice

all:

nasty.

likable, agreeable:

disordered, disagreeable, unmannerly, nasty, repulsive, imprecise, unsociable, unfriendly, unlikable, unpleasant, horrible, unsuitable, aloof, ugly, cool, unacceptable, mean, bad, unrefined.

precise, neat, refined:

rough, coarse, undiscriminating, inexact, sloppy.

noun:

affable, happy-go-lucky, unambiguous, crabby, unequivocal, forbidding, flexible, easygoing, irritating, maddening, great, intimidating, carefree, unprincipled, black, miserable, apparent, dishonorable, stale, clear, dull, detestable, Outraging, shabby, degenerate, lachrymose, heartrending, dissolute, forbidden, unethical, sorrowful, fussy, indiscriminating, querulous, grouchy, unrighteous, infuriating, careless, stout, base, large, gloomy, disturbing, evident, boring, Revulsive, vexing, immoral, clumsy, slipshod, banned, boorish, palpable, quick-tempered, evil-minded, inconsiderate, inappropriate, unbecoming, infamous, inexact, depraved, distressing, indecorous, discourteous, perverted, wrong, dreary, annoying, heedless, corrupt, plain, blunt, debased, immense, Interdicted, testy, unmistakable, lamentable, perturbing, choleric, churlish, lax, disheartening, deplorable, ungenial, patent, unappealing, villainous, libertine, iniquitous, relaxed, unsociable, unceremonious, sad, unattractive, obvious, informal, casual, upsetting, undemanding, vinegary, unacceptable, insipid, fallen, unsatisfactory, grungy, peevish, gauche, undiscriminating, wretched, uncritical, indelicate, joyless, flat, tedious, vile, exasperating, Dissatisfying, irritable, barred, sinful, incautious, incensing, dismal, contentious, touchy, regrettable, transparent, petulant, dishonest, broad, lugubrious, commonplace, uncivil, ungracious, seedy, unkind, irascible, slapdash, incorrect, lenient, outlawed, mournful, prohibited, ungraceful, debauched, permissive, improper, unrespectable, loose, blameworthy, open-and-shut, indefinite, peeving, awkward, thick, yucky, huge, heavy, low, argumentative, god-awful, reprobate, unscrupulous, ghastly, perspicuous, devil-may-care, laid-back, nefarious, manifest, snappish, doleful, unseemly, Unamiable, aggravating, clear-cut, sloppy, ill-mannered, tacky, grumpy, inflaming, dolorous, unhappy, rough, cranky, hellish, depressing, erring, unmannerly, heartbreaking, lackadaisical, tragic, Pleasureless, big, proscribed, intolerable, breezy.