Slander per se is the spoken word version of libel per se—a false statement that is so obviously harmful that damage to a plaintiff's reputation is presumed. Examples of slander per se include false accusations of improper sexual conduct, criminal activity, or bad business dealings.
California, though, is not one of the U.S. states with criminal defamation laws. While California defamation defendants do not face potential imprisonment, they could be subject to civil lawsuits and hefty damages (including punitive damages), depending on the nature and harm caused by their false statements.
Defamation is a statement that injures a third party's reputation. The tort of defamation includes both libel (written statements) and slander (spoken statements). State common law and statutory law governs defamation actions, and each state varies in their standards for defamation and potential damages .
In California, you must prove five elements to establish a defamation claim: An intentional publication of a statement of fact; That is false; That is unprivileged; That has a natural tendency to injure or causes “special damage;” and, The defendant's fault in publishing the statement amounted to at least negligence.
Slander can be hard to prove, as the complainant must show the slanderer was driven by malice and knew their claims were false. Slander is different from libel, which are false statements made through print or broadcast.
Defamation is the collective name for two separate torts: libel and slander. The distinction turns on the permanence of the defendant's statement, but broadly speaking libel covers written publications (even if quickly removed) whereas slander is for more transient statements, such as spoken words.
Libel is a method of defamation expressed by print, writing, pictures, signs, effigies, or any communication embodied in physical form that is injurious to a person's reputation; exposes a person to public hatred, contempt or ridicule; or injures a person in their business or profession.
Second, libel is actionable per se (i.e. without proof of damage) whereas slander, subject to exceptions (see below), is actionable only upon proof of 'special' damage (actual damage is probably a less misleading and therefore better phrase to use though)