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Key Facts
- State level: Libel and slander are traditional forms of defamation, a body of law governed mainly by state law.
- State level: Libel usually concerns written or otherwise fixed communications, while slander usually concerns spoken statements.
- Federal and state: The First Amendment limits how states may impose defamation liability, especially when speech concerns public officials or public figures.
- Federal level: Constitutional “actual malice” means knowledge of falsity or reckless disregard for truth, not simply hostility or spite.
The basic libel-versus-slander distinction is the form of communication. Libel generally involves writing or another fixed medium, while slander generally involves speech.
Both are forms of defamation
Defamation law addresses false factual assertions communicated to someone other than the subject that harm reputation under the governing state standard.
A statement is not actionable merely because it is insulting, critical, or unpopular; the legal analysis commonly asks whether it asserts a provably false fact, identifies the subject, was published to a third person, involves the required degree of fault, and caused legally recognized harm.
Exact elements, privileges, filing deadlines, and damage rules vary by state.
Why the medium can matter
Traditional doctrine often treated permanent publications as libel and transitory speech as slander, with different rules about presumed damages.
Modern communications can blur that line because a podcast, livestream, social-media post, recording, or message may combine spoken and fixed forms.
The governing jurisdiction’s definitions therefore matter more than the everyday label attached to the communication.
The First Amendment changes some state-law rules
Defamation remains principally state law, but the United States Constitution places First Amendment limits on liability and damages.
Under New York Times Co. v. Sullivan, a public official seeking damages for a false statement about official conduct must prove actual malice.
Actual malice in this setting means that the speaker or publisher knew the statement was false or acted with reckless disregard for whether it was false.
Later Supreme Court cases distinguish public officials, public figures, private people, matters of public concern, and matters of private concern, so the same sentence can face different legal standards in different contexts.
Is slander illegal?
Slander can create civil liability when the required state-law and constitutional elements are proved, but false speech is not automatically a crime.
Some jurisdictions retain criminal-defamation laws, yet their text, enforcement, and constitutionality vary, making “illegal” too broad a substitute for identifying the actual civil or criminal rule.
