EnglishMain Dictionary
caustic
Universal Words
adjective
1 (of a chemical substance) able to destroy or dissolve other substances:
a caustic cleaning product * caustic liquid which blisters the skin
2 critical in a bitter or SARCASTIC way:
caustic comments / wit * Her speech was a caustic attack on government officials.
caustically adverb:
'You are no help at all,' she said caustically.