Invective

Webster's Dictionary of the English Language

·adj Characterized by invection; critical; denunciatory; satirical; abusive; railing.

II. Invective ·noun An expression which inveighs or rails against a person; a severe or violent censure or reproach; something uttered or written, intended to cast opprobrium, censure, or reproach on another; a harsh or reproachful accusation;

— followed by against, having reference to the person or thing affected; as an invective against tyranny.