General:
* Sarcasm: This is the most direct and common noun for the adjective "sarcastic." It can refer to the act of being sarcastic or the sarcastic remark itself.
* Irony: This is a broader term that encompasses sarcasm as well as other forms of irony, such as situational irony or dramatic irony.
* Satire: This is a literary technique that uses humor, irony, exaggeration, or ridicule to expose and criticize people's stupidity or vices.
Specific to the speaker:
* Sarcaster: This is less common but can refer to a person who frequently uses sarcasm.
* Cynic: This is a noun for someone who is distrustful of human nature and motives, often expressing this through sarcasm.
The best choice depends on the specific situation and what you want to emphasize.