Synonyms of caustic in English:

caustic


See definition of caustic

adjective

1‘a caustic cleaner’

SYNONYMS

corrosive, corroding, mordant, acid, alkaline, burning, stinging, acrid, harsh, destructive

2‘a caustic comment’

SYNONYMS

sarcastic, cutting, biting, mordant, stinging, sharp, bitter, scathing, derisive, sardonic, ironic, scornful, trenchant, acerbic, vitriolic, tart, acid, pungent, acrimonious, astringent, rapier-like, razor-edged, critical, polemic, virulent, venomous, waspish

British informal sarky

rare mordacious, acidulous

ANTONYMS

kind