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"
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.
"She delivered her criticism with such biting sarcasm that the room went silent as she rolled her eyes at his clumsy excuse."