Englishacid
adjective
1 a very juicy fruit with a slightly acid flavor:
acidic, sour, tart, bitter, unsweetened, sharp, biting, acrid, pungent, acerbic, vinegary, vinegarish, acetic, acetous;
rare acidulous, acidulated.
▷antonyms sweet.
2 she was prone to making acid remarks:
acerbic, sarcastic, sharp, sardonic, satirical, scathing, cutting, razor-edged;
incisive, penetrating, piercing, biting, stinging, searing;
keen, caustic, trenchant, mordant, bitter, acrimonious, astringent;
harsh, severe, abrasive, wounding, hurtful, unkind, cruel, vitriolic, virulent, venomous, poisonous, waspish, spiteful, vicious, malicious;
North American acerb;
informal bitchy, catty;
British, informal sarky;
North American, informal snarky;
rare mordacious, acidulous.
▷antonyms kind, pleasant, complimentary.