Gibe -

Since a gibe is often quick and sharp, it fits the classic style of an epigram—a short, witty poem with a sting at the end.

A character standing at the edge of a lavish party, quietly delivering gibes about the guests. Since a gibe is often quick and sharp,

"He boasts of wit with such a grand display,Yet speaks for hours with nothing new to say;A mind so sharp, it cuts through thin blue air,But looks for substance and finds nothing there." Depending on the "flavor" of your piece, you

You could write a "piece" for a character known for their sharp tongue, similar to a Shakespearean fool or a modern-day cynic. The Quip: A clever or witty taunt

Depending on the "flavor" of your piece, you might use these related terms to refine your direction: A sharp, pointed remark meant to hurt. The Jeer: A loud, rude mock, often from a crowd. The Sneer: A contemptuous facial expression or remark. The Quip: A clever or witty taunt. 'Jive' vs. 'Jibe' vs. 'Gibe' - Merriam-Webster