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adjective
bad-tasting; gone bad
Synonyms: acerb, acetic, acetose, acetous, acid, acidic, acidulated, acrid, astringent, bad, biting, bitter, briny, caustic, curdled, cutting, dry, fermented, green, keen, musty, peppery, piquant, pungent, rancid, salty, sharp, soured, sourish, stinging, tart, turned, unpleasant, unripe, unsavory, unwholesome, vinegary, with a kick
Antonyms: good, pleasant, sweet, tasty
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adjective
in a bad mood
Synonyms: acid, acrid, acrimonious, bitter, churlish, crabby, cynical, disagreeable, discontented, displeasing, embittered, grouchy, grudging, ill-natured, ill-tempered, irritable, jaundiced, on edge, peevish, rotten, tart, ungenerous, unhappy, unpleasant, waspish
Antonyms: cheerful, cordial, friendly, happy
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verb
alienate
Synonyms: acidify, curdle, disenchant, embitter, envenom, exacerbate, exasperate, make sour, spoil, turn, turn off
Antonyms: encourage, excite, incite