tart

1 causing or characterized by the one of the four basic taste sensations that is produced chiefly by acids I didn't add enough sugar to the lemonade, and now it's way too tart Synonyms acid, acidic, acidulous, sourish, sour, 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 marked by the use of wit that is intended to cause hurt feelings stood ready with a tart comeback in case the lout asked her if she wanted to dance Synonyms acerb, acerbic, acid, acidic, acidulous, acrid, barbed, biting, caustic, corrosive, cutting, mordant, pungent, sardonic, satiric (or satirical), scalding, scathing, sharp, smart-aleck, smart-alecky, smart-mouthed, snarky, sarcasticRelated 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