Irony used to convey contempt (7)

I believe the answer is:

sarcasm

(Other definitions for sarcasm that I've seen before include "Ironically scornful language" , "Ironical remark or taunt" , "Satirical and scornful remarks" , "Language expressing scorn or contempt" , "insulting language" .)

I've seen this clue in The Guardian.

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