Wordnet 3.0
NOUN (1)
1. 
 witty language used to convey insults or scorn; 
- Example: "he used sarcasm to upset his opponent"- Example: "irony is wasted on the stupid"- Example: "Satire is a sort of glass, wherein beholders do generally discover everybody's face but their own"--Jonathan Swift[syn: sarcasm, irony, satire, caustic remark]
WordNet (r) 3.0 (2006):
caustic remark
    n 1: witty language used to convey insults or scorn; "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"--
         Jonathan Swift [syn: sarcasm, irony, satire, caustic
         remark]