Philippic is a noun that refers to a bitter attack or denunciation.

Our word of the day has its origin in ancient Greece, namely when a Greek orator made a series of fiery speeches against Philip the second of Macedon. Centuries later, the word Philippic entered the English language as reference to any passionate tirade.

Sandy’s philippic against management caught everyone at the office off guard. Nobody knew she had such rage and bitterness in her.