(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.

plural of sarcasm

(obsolete) sarcastic

Unable or deficient in recognising or understanding sarcasm.

(informal) A supposed innate ability to identify sarcasm.

plural of sarcasm detector