caustic
caus-tic
adjective
Sarcastic, critical, or biting in a harsh and unpleasant manner.
"Her caustic remarks often upset colleagues."
noun
A substance, typically a strong alkali, that burns or corrodes.
"Wear gloves when handling the caustic."
adjective
Capable of burning or corroding organic material through chemical action.
"Handle the caustic chemical with extreme care."
Thesaurus
Synonyms: acerb, sulphurous, vitriolic, unpleasant, blistering, acrid, acerbic, sulfurous, virulent, bitter, acid, destructive