* Offensive and insulting: Using coarse or obscene language.
* False and malicious: Intentionally spreading harmful lies or gossip.
* Designed to damage reputation: Aiming to harm someone's character or standing.
Think of it as a stronger, more malicious version of "crude" or "disrespectful."
Example: "The politician made a scurrilous attack on his opponent, accusing him of corruption and infidelity."