What is a bitter and prolonged verbal attack called?

The term that signifies a bitter and prolonged verbal attack is "diatribe." This word is often used to describe a lengthy and vehement speech or piece of writing that expresses strong criticism or hostility against a particular subject, person, or institution. The connotation of "diatribe" suggests a level of intensity and negativity, indicating that the speaker or writer is not merely critiquing but is instead engaged in a passionate denunciation.

In contrast, options like "reprimand," "discussion," and "statement" do not convey the same sense of aggressive criticism. A reprimand often indicates a formal or official rebuke, but it does not necessarily carry the prolonged or bitter quality of a diatribe. "Discussion" refers to a conversation or dialogue, which is inherently different as it involves multiple viewpoints and is typically more constructive. A "statement," on the other hand, is simply a declaration or expression of something, lacking the targeted antagonism and intensity that characterize a diatribe. Therefore, "diatribe" is the precise term that captures the essence of a bitter, extended verbal assault.