Acid

Synonyms: Acidic, acidulous, tart, dry, tartish, tangy, zesty, zestful, sharp, hyperacid, sour, vinegary, sourish, soured, unsweetened, pungent, astringent, zingy, and puckery.

Synonyms: Angry, bilious, splenetic, ornery, cantankerous, exasperated, ill-humored, ill-natured, bloody-minded, upset, depressed, contentious, querulous, grouchy, anal, irate, grumpy, crabby, sullen, dour, fussy, short-tempered, quick-tempered, argumentative, old-maidish, irritable, dyspeptic, disagreeable, mad, surly, indignant, peppery, ill-tempered, bearish, choleric, petulant, irascible, snappish, uptight, crotchety, testy, peevish, touchy, morose, cussed, contrary, cranky, snippy, glum, and schoolmarmish.

Synonyms: Acidic, sarcastic, barbed, caustic, acrid, acerbic, sardonic, tart, scathing, acerb, ironical, cynical, harsh, smart-aleck, smart-alecky, smart-mouthed, concise, severe, incisive, poignant, vitriolic, facetious, spikey, stringent, tartish, abrupt, sharp-tongued, pithy, succinct, curt, terse, insincere, snippy, snippety, satirical, satiric, corrosive, biting, acidulous, mordant, pungent, cutting, sharp, ironic, scalding, sour, snarky, dry, cross, blunt, spiky, brisk, trenchant, wry, flippant, sourish, acrimonious, bitter, keen, resentful, gruff, crisp, tongue-in-cheek, brusque, rough, backhanded, and brusk.