Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Thesaurus

acid

adjective

Synonyms and Antonyms of acid

  1. 1 causing or characterized by the one of the four basic taste sensations that is produced chiefly by acids <an acid-tasting medicine> Synonyms sour, acidic, acidulous, sourish, tart, tartish, vinegaryRelated Words dry, soured, unsweetened; pungent, sharp, tangy, zestful, zesty, zingy; astringent, puckery hyperacidNear Antonyms sweet; bland, smooth; flat, flavorless, insipid, savorless, tasteless, zestless; dilute, thin, watery, weak

  2. 2 having or showing a habitually bad temper <with her acid personality, my aunt could be relied upon to bring some much-needed balance to the holiday gush> Synonyms ill-tempered, bearish, bilious, bloody-minded [chiefly British], cantankerous, disagreeable, dyspeptic, ill-humored, ill-natured, ornery, splenetic, surlyRelated Words choleric, crabby, cranky, crotchety, fussy, grouchy, grumpy, querulous; irascible, irritable, peevish, peppery, petulant, quick-tempered, short-tempered, snappish, snippy, testy, touchy; argumentative, contentious, contrary, cussed; angry, exasperated, indignant, irate, mad, upset, uptight; depressed, dour, glum, morose, sullen; anal, old-maidish, schoolmarmishNear Antonyms agreeable, amicable, congenial, friendly, pleasant; benign, gentle, kind, nice, sweet; bubbly, cheerful, cheery, effervescent, exuberant, high-spirited, joyful, lighthearted, lively, vivacious; content, glad, happy; calm, placid, serene; long-suffering, patient, tolerantAntonyms amiable, good-humored, good-natured, good-tempered

  3. 3 marked by the use of wit that is intended to cause hurt feelings <a cultural gadfly known for an acid tongue that spares no one> Synonyms acerb, acerbic, sarcastic, acidic, acidulous, acrid, barbed, biting, caustic, corrosive, cutting, mordant, pungent, sardonic, satiric (or satirical), scalding, scathing, sharp, smart-aleck, smart-alecky, smart-mouthed, snarky, tartRelated Words brisk, cross, sharp-tongued, sour, sourish, spiky (also spikey), tartish; incisive, keen, poignant, trenchant; cynical, dry, ironic (also ironical), wry; facetious, flippant, tongue-in-cheek; acrimonious, bitter, resentful, vitriolic; harsh, rough, severe, stringent; abrupt, blunt, brusque (also brusk), concise, crisp, curt, gruff, pithy, snippety, snippy, succinct, terse; backhanded, insincereNear Antonyms amusing, droll, merry, playful, sportive, waggish; gentle, mild; bland; good-humored, good-natured; diplomatic, polite, smooth, suave, urbane; affable, cordial, genial, gracious, hospitable, sociable




Learn More about acid


Seen and Heard

What made you want to look up acid? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the act or an instance of embezzling

Get Word of the Day daily email!