The Statement - A "statement" needs to be spoken (slander), written (libel), or otherwise expressed in some manner. ... Falsity - Defamation law will only consider statements defamatory if they are, in fact, false. A true statement is not considered defamation.
Does slander have to be a lie?
A defamatory statement must be false -- otherwise it's not considered damaging. Even terribly mean or disparaging things are not defamatory if the shoe fits. Most opinions don't count as defamation because they can't be proved to be objectively false.
What qualifies as slander?
Generally, slander occurs when the reputation or good name of someone is damaged as a result of false statements that are orally made. Libel, on the other hand, occurs when false statements regarding another are put in writing.