Literary sarcasm (6)
I believe the answer is:
satire
'literary sarcasm' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for satire that I've seen before include "Humorous criticism of folly or vice" , "work with cutting devices?" , "Parody, spoof" , "Language saying one thing but implying the opposite" , "Lampoon(ery)" .)