The OED defines sarcasm as 'a sharp, bitter, or cutting expression or remark; a bitter gibe or taunt'. Irony is often used in a sarcastic remark, but it's gener

The OED defines sarcasm as 'a sharp, bitter, or cutting expression or remark; a bitter gibe or taunt'. Irony is often used in a sarcastic remark, but it's generally the cheap sort of irony - 'Well done, genius' in response to a stupid error - rather than the more literary sort, which when particularly well-developed we call satire.