Synonyms of caustic in English:

caustic


See US English definition of caustic

See UK English definition of caustic

See Spanish definition of cáustico

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