caustic_remark
1. [ noun ] witty language used to convey insults or scorn
Synonyms: satire irony sarcasm
Examples:

"he used sarcasm to upset his opponent" "irony is wasted on the stupid" "Satire is a sort of glass, wherein beholders do generally discover everybody's face but their own"--Johathan Swift

Related terms: wit satirize sarcastic unsarcastic
Similar spelling:   caustic_soda
  caustic_lime
  caustically
  caustic_potash