SARCASM
sarcasm, irony, satire, caustic remark
(noun) 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
Source: WordNet® 3.1
Etymology
Noun
sarcasm (countable and uncountable, plural sarcasms)
(uncountable) Use of acerbic language to mock or convey contempt, often using irony and (in speech) often marked by overemphasis and a sneering tone of voice.
(countable) An act of sarcasm.
Synonyms
• (uncountable): derision, facetiousness, irony, ridicule, satire
• (countable): taunt, gibe
Usage notes
Because sarcasm and irony often go together, people often use sarcasm to refer to irony. Strictly speaking, an ironic statement is one that means the opposite of its content, and a sarcastic statement is an acerbic or sardonic one. To distinguish the two, saying "Oh my god, I hate you!" to sincerely congratulate one's best friend on their good fortune is ironic, but not sarcastic; saying, "I'm not a mind reader, okay?" is sarcastic, but not ironic.
Source: Wiktionary
Sar"casm, n. Etym: [F. sarcasme, L. sarcasmu, Gr.
Definition: A keen, reproachful expression; a satirical remark uttered with
some degree of scorn or contempt; a taunt; a gibe; a cutting jest.
The sarcasms of those critics who imagine our art to be a matter of
inspiration. Sir J. Reynolds.
Syn.
– Satire; irony; ridicule; taunt; gibe.
Source: Webster’s Unabridged Dictionary 1913 Edition