Caustic

Etymology

From Greek "kaustikos" ("capable of burning"), from "kaiein" ("to burn"), via Latin "causticus." The chemical sense (as in caustic soda) came first; the figurative sense — burning speech — followed naturally.

adjective · /KAW-stik/
Bitingly sarcastic or sharply critical — or, literally, capable of burning through material.
What it names
Lets you name a wit or tone that doesn’t just criticize but corrodes, leaving a mark.
Example
Her caustic review didn’t just pan the film; it seemed to want it destroyed.
Related idea
Acerbic shares the sourness but stays cleverer and cooler; caustic is hotter, meant to burn rather than merely sting.