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-tempered, bad, 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-key, off-tone, off, 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-tempered, sour as vinegar, sour balls, sour cream, sour grapes, sour pickle, 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