acerbically

This term describes a style of communication that is intentionally sharp and caustic. It suggests a level of intellectual aggression where the criticism is not just harsh, but cutting and often laced with a sophisticated or ironic bitterness. It is most frequently used in literary or formal contexts to describe a specific tone of voice or a written critique.

Because it describes a manner of speaking or writing, it is almost exclusively used to modify verbs of communication such as "remarked," "replied," or "commented." It differs from "rudely" in that acerbity implies a certain sharpness of wit or a targeted, precise acidity rather than a general lack of manners.