- caustic
- adj1. acrimonious, mordant, bitter, acrid, pungent; trenchant, cutting, incisive, slashing, penetrating, piercing, stinging, nipping, biting; astringent, severe, stern, austere, stringent; harsh, keen, sharp, sharp-tongued; sour, acidulous, acid, tart; virulent, spiteful, malicious, maleficent, venemous, vicious, malevolent, malignant; invidious, hateful.2. sarcastic, satirical, ironic, ironical, cynical; edged, double-edged; contemptuous, taunting, teasing; scornful, mocking, derisive, derisory, sardonic.3. insulting, excoriating, denouncing, berating, lashing; abusive, corrosive, corroding, erosive; cruel, mean, brutal; unkind, uncharitable, unbenevolent, uncordial, unamiable, unfriendly.4. peevish, petulant, crabbed, testy, touchy, waspish, irascible, edgy; ill-tempered, ill-humored, ill-natured, short-tempered; hostile, resentful, indignant, piqued, angry; morose, surly, moody.5. rude, churlish, boorish, bearish, graceless, unceremonious, rough; unmannerly, uncivil, ill-bred, ungracious, impolite, discourteous; abrupt, brusque, blunt, curt, short, gruff, crusty.
A Note on the Style of the synonym finder. 2014.