Mordant

ˈmɔːdənt

adjective

having a sharp or critical quality; biting

The word 'mordant' originates from the Latin word 'mordere' meaning 'to bite', which reflects its sharp and biting nature in describing remarks or humor.

“My father was Lord Eddard Stark of Winterfell.” The girl watched him warily, but Stonesnake gave a mordant chuckle.

George R. R. Martin

A Clash of Kings

It had no name.” Tyrion took a mordant pleasure in inventing the details of the colorful life of Hugor Hill, also known as Yollo, a bastard out of Lannisport.

Martin, George, R. R.

A Dance With Dragons

Taraza’s classical veronica (how apt the bullring image) had aimed the Honored Matres into such episodes of carnage that the universe was mordant with potential supporters of their brutalized victims.

Frank Herbert

Chapterhouse: Dune