acrimonious, rancorous, frosty, stormy, nasty, protracted, angry, embittered, spiteful, vitriolic, heated, sour, harsh, contentious, stinging, testy, bittersweet, tumultuous, fierce, divisive, prickly, fractious, painful, messy, internecine, furious, tempestuous, unpleasant, brutal, unhappy, ugly, tense, caustic, vituperative, recriminatory, bloody, sad, disputatious, livid, vicious, cold, fiery, acrid, fratricidal, slanging match, quarrelsome, tetchy, intense, resentful, agonizing, rancid, embarrassing, amicable, riven, tortuous, vindictive, turbulent, feisty, sweet, great schism, acerbic, boiled, heartbroken, sour grapes, titanic, miserable, cordial, irreconcilable, salty, torturous, humiliating, dispiriting, uneasy, rocky, hellish, curdled, poisonous, disgruntled, chilly, pungent, stark, cantankerous, chippy, combative, unedifying, scarred, strident, vengeful, pyrrhic, polarized, unstatesmanlike, ferocious, resiny, bilious, touchy, stirring, barbed, antagonistic, savage, boozy, heartbreaking, hurtful, collins, dewey, frost, kelly, long, moore, o'connor, studying, above, acquaintance, adams, affliction, alarm, anglo, atrocity, barrett, bates, baxter, black, bitterest, bitterer, fiercest, deadliest, fiercer, vehement, factional, terrible, dreadful, intraparty, sorrowful

acerbity, acridity, acridness, pungency, sharpness

., 2-hydroxybenzoic acid, absinthe, absinthe oil, acerb, acerbate, acerbic, acerbity, acrimony, african millet, aletris, almond oil, amygdalin, angostura, angostura bark, araroba, arginine, arishth, artemisia absinthium, astringent, azadirachta indica, bigarade, bitterish, bitterness, bitternut, bitternut hickory, bitters, bitterwood, bitterwood tree, bitter almond oil, bitter dock, bitter end, bitter hickory, bitter orange, bitter orange tree, bitter pecan, bitter pignut, bitter principle, black hickory, bogbean, bog myrtle, broad-leaved dock, broccoli raab, broccoli rabe, brown hickory, brucine, buckbean, caffein, caffeine, cardamine, cardamine pratensis, carya aquatica, carya cordiformis, carya glabra, cassareep, cherry laurel, chicory, chokecherry, chokecherry tree, chrysarobin, citrus aurantium, cola nut, colicroot, colic root, common horehound, common wormwood, coracan, corakan, costmary, crow corn, cruelly, cuckooflower, cuckoo flower, curly endive, descurainia pinnata, dogbane, eleusine coracana, embitter, envenom, exacerbation, exchange, expressed almond oil, family simaroubaceae, feud, finger millet, galbanum, gall, genus aletris, genus cardamine, genus picris, genus simarouba, german chamomile, goa powder, golden buttons, guinness, gum albanum, gymnopilus spectabilis, herb of grace, hop, hops, hydrogen cyanide, hyssop, invective, jaundice, justifiably, kola nut, kurakkan, lad's love, lady's smock, laurel cherry, leonurus cardiaca, madnep, makin, marasca, marasca cherry, maraschino, maraschino cherry, margosa, marmalade orange, marrubium vulgare, marsh trefoil, matricaria chamomilla, matricaria recutita, meadow cress, melia azadirachta, menyanthes trifoliata, motherwort, myrica gale, neem, neem tree, nim tree, old man, pale ale, picris, pignut, pignut hickory, pill, prolonged, proverbially, prunus avium, prunus cerasus marasca, prunus laurocerasus, prunus virginiana, quassia, quassia amara, quassia family, quinine, ragee, ragi, rancor, rancour, ratafee, ratafia, red devil, resent, resentment, rue, rumex obtusifolius, ruta graveolens, salicylic acid, salt, sanguinary, sardonic, saturnine, scented fern, scotch gale, secobarbital, secobarbital sodium, seconal, seville orange, sharp, sharp tongue, simarouba, simaroubaceae, sodium sulfate, sodium sulphate, sour orange, star grass, strife, strophanthin, swamp hickory, sweet almond oil, sweet cherry, sweet false chamomile, sweet gale, tanacetum vulgare, tansy, tansy mustard, tarawa, tarawa-makin, tributyrin, turf war, unicorn root, vitriol, vituperation, water bitternut, water hickory, water shamrock, white horehound, wild chamomile, wild parsnip, wormwood oil, yellow dock

ale, change taste, gustatory perception, gustatory sensation, taste, taste perception, taste property, taste sensation

acerb, acerbic, acid, acrid, acrimonious, biting, bitingly, bitterly, bitterness, blistering, caustic, hostile, intolerable, painful, piercingly, resentful, sorrowful, sulfurous, sulphurous, tasteful, unpleasant, venomous, virulent, vitriolic