Acerbic

[Cami]

The person who responds dryly, often with an [element] of [sarcasm] or causticism [underlying], to any given situation.

[Merna]

(especially of a comment or style of speaking) sharp and forthright.

[Britney]

A word that [pretentious] [cunts] say to try to look smart when they are pissed. [Normal people] just use the word sarcastic.

[Marquetta]

used to describe something that is spoken or written in a way that is direct, clever, and cruel: