caustic

adjective

(of a chemical substance) able to destroy or dissolve other substances: a caustic cleaning product
critical in a bitter or SARCASTIC way: caustic comments / wit

Example sentence:
She always seemed to have a caustic reply to any silly or unnecessary question.

This brilliant, caustic, rambling satire is written in a colloquial style.
这篇光辉的，刻薄的，但很松散的讽刺叙事诗是以一种通俗的口语体写的。