Synonyms and related words :
abrupt, absonant, acerb, acerbate, acerbic, acerbity, acescency, acescent, acetify, acid, acidic, acidify, acidity, acidulant, acidulate, acidulated, acidulent, acidulous, acidulousness, acrid, acrimonious, aftertaste, agent provocateur, aggravate, amaroidal, amplify, annoy, asperous, astringent, atonal, augment, bad, bad-tempered, bilious, biting, bitter, bitter as gall, blown, bread-and-butter pickle, brusque, build up, cacophonous, caustic, chokecherry, choleric, churlish, coarse, crab, crab apple, crabbed, crabby, cracked, cranky, cross, crusty, curdle, curdled, curt, cutting, deepen, deteriorate, diaphonic, dill pickle, disagreeable, disconsonant, discontented, discordant, disenchant, disharmonic, disharmonious, dislikable, displeasing, dissonant, distasteful, dry, dryness, dyspeptic, edgy, embitter, embittered, enhance, enlarge, envenom, escharotic, exacerbate, exasperate, ferment, fermented, flat, flavor, frowy, gamy, gloomy, go bad, go off, gone off, grating, green, green apple, greenness, grouchy, gust, hard, harsh, heat up, heighten, high, hot up, hyperacidity, ill-natured, ill-tempered, immelodious, impatient, increase, inharmonic, inharmonious, intensify, irritate, irritating, jaundiced, keen, lemon, lime, magnify, make acute, make worse, mordant, morose, musicless, nasty, nonmelodious, nose-tickling, off, off-key, off-tone, out of pitch, out of tone, out of tune, palate, peeve, peevish, penetrating, petulant, pickle, pickled, piercing, piquant, poignant, provoke, pungency, pungent, rancid, rank, raucous, reechy, relish, rough, salt, sapidity, sapor, savor, savoriness, sec, severe, sharp, sharpen, shrill, smack, snappish, sour as vinegar, sour balls, sour cream, sour grapes, sour pickle, sour-tempered, sourdough, soured, sourish, sourishness, sourness, spoil, spoiled, spoilt, stale, stinging, stomach, strident, strong, subacidity, sullen, sweet, tainted, tang, tart, tartish, tartishness, tartness, taste, terrible, testy, thankless, tongue, tooth, trenchant, tuneless, turn, turn sour, turned, ugly, unalluring, unappealing, unappetizing, unattractive, undelectable, undelicious, undesirable, unengaging, unenjoyable, unharmonious, uninviting, unlikable, unmelodious, unmusical, unpalatable, unpleasant, unpleasing, unripe, unripeness, unsavory, unsweet, unsweetened, unsweetness, untasteful, untunable, untuned, untuneful, unwelcome, verjuice, vex, vinegar, vinegariness, vinegarish, vinegarishness, vinegary, vitriolic, worsen, yogurt