Calumniate. (v.) to slander; to accuse falsely and maliciously.
Malicious falsehood differs from defamation because the statement concerned may not make people think less of you. For example, if somebody states that an actor has retired, a casting director may believe the statement and hire someone else, causing the actor financial loss.
Defamation is a false statement which discredits a person's character or reputation. If it is spoken it is called slander. If it is published in print (including digital print), or through some form of media, it is called libel.
The noun defamation describes something very mean and completely deliberate, essentially a false accusation against someone or an attack on a person's good reputation. The terms libel and slander — written or spoken lies about a person, group, or business — both fall under the category of defamation.
The Act abolishes the distinction between libel and slander and the action for defamation may be brought without proof of special damage. There are three traditional elements to the cause of action that the plaintiff must establish, namely publication, identification and defamatory meaning.