Defamation is illegal in every U.S. state as a civil wrong, meaning the person whose reputation was harmed can sue the speaker for money damages. In roughly two dozen states, certain defamatory statements are also classified as crimes punishable by fines or jail time, though criminal prosecutions are rare. The First Amendment protects a great deal of speech, but it does not shield someone who spreads a provably false statement that damages another person’s reputation.
Defamation as a Civil Wrong
Most defamation disputes play out in civil court. The person whose reputation was harmed (the plaintiff) sues the speaker (the defendant) and asks a judge or jury to award money. The plaintiff must prove the case by a “preponderance of the evidence,” which means showing the claim is more likely true than not.
A plaintiff who wins can recover compensation for things like lost income, emotional distress, and damage to professional standing. In cases involving especially bad conduct, courts can also award punitive damages designed to punish the defendant and deter similar behavior.
When Defamation Is a Crime
About two dozen states still have criminal defamation statutes on the books. Where they apply, the government — not the injured person — brings the case, and a conviction typically carries misdemeanor-level penalties: fines and, in some states, a short jail sentence. Because it is a criminal case, the prosecution must prove guilt “beyond a reasonable doubt,” the same standard used in any other criminal matter. A conviction also creates a permanent record that can affect employment and professional licensing.1Supreme Court of the United States. Frese v. Formella, Petition for a Writ of Certiorari
Constitutional rulings have narrowed how these statutes can be used. In Garrison v. Louisiana, the Supreme Court held that a criminal defamation statute must incorporate the “actual malice” standard, meaning prosecutors must prove the speaker knew the statement was false or acted with reckless disregard for the truth. In Ashton v. Kentucky, the Court struck down a vaguely worded criminal libel definition as a due process violation.2Legal Information Institute. First Amendment – Defamation Even where criminal defamation remains law, any prosecution has to clear those constitutional hurdles, which is one reason charges are uncommon.
What a Plaintiff Has to Prove
A civil defamation claim has four elements, and each has to be proven independently.
- A false statement of fact. The statement must be something capable of being proven true or false. “She embezzled company funds” is a factual claim. “He’s a bad boss” is opinion.
- Publication to a third party. The statement must have reached at least one person other than the subject. Conversations, social media posts, emails, and news articles all count. A false insult said only to the person it’s about isn’t defamation, because no one else’s view of them has changed.
- Fault. At minimum, the speaker must have been negligent — careless about whether the statement was true. For public figures, the standard is higher.
- Damages. The statement must have caused real harm, such as lost business, a firing, or measurable harm to personal relationships.
A true statement defeats the claim at the first element, no matter how damaging it is. A false statement that caused no measurable harm fails at the last.
Libel, Slander, and Defamation Per Se
Libel is a false statement in a permanent form: a newspaper article, blog post, email, or video. Slander is a spoken statement that isn’t recorded. Courts generally treat libel as more serious because written material can spread widely and keep spreading.
Some statements are considered so inherently damaging that the law presumes harm without requiring the plaintiff to prove a specific loss. This is called “defamation per se,” and it traditionally covers four categories: falsely accusing someone of a serious crime, making false claims that harm their ability to do their job or run their business, falsely saying they have a serious communicable disease, and false statements about their sexual conduct.
Public Figures Face a Higher Bar
How hard a defamation case is to win depends on who the plaintiff is. The Supreme Court created this distinction to keep public debate robust while still giving ordinary people meaningful recourse.
In New York Times Co. v. Sullivan (1964), the Court held that a public official cannot recover damages for a false statement about their official conduct unless they prove actual malice — knowledge of falsity or reckless disregard for the truth.2Legal Information Institute. First Amendment – Defamation The Court later extended this requirement to “public figures,” meaning people who have achieved widespread fame or voluntarily inserted themselves into a public controversy.3Justia. Curtis Publishing Co. v. Butts, 388 U.S. 130 (1967)
Private individuals have a lower bar. In Gertz v. Robert Welch, Inc. (1974), the Supreme Court ruled that states may set their own fault standard for private-figure claims, as long as they require some showing of fault rather than imposing strict liability.4Legal Information Institute. Gertz v. Robert Welch, Inc., 418 U.S. 323 (1974) Most states ask private plaintiffs to prove negligence. Two wrinkles: when a private plaintiff’s claim involves a matter of public concern, the plaintiff must prove the statement false rather than making the defendant prove it true, and any private plaintiff who seeks punitive damages has to meet the actual malice standard.2Legal Information Institute. First Amendment – Defamation
Defenses That Can End the Case
Several defenses can defeat a defamation claim outright, even when a statement caused serious damage.
Truth is a complete defense. If the statement is true, it doesn’t matter how harmful it was or how it was intended.
Opinion is protected when a reasonable listener would understand it as opinion rather than a factual claim. “That restaurant serves terrible food” is opinion. “That restaurant failed its last three health inspections” is a verifiable factual claim, and actionable if false.
Absolute privilege immunizes certain statements regardless of falsity or intent. Statements by judges, lawyers, parties, and witnesses during judicial proceedings are absolutely privileged, as are statements by lawmakers during legislative proceedings and certain official government communications.
Qualified privilege protects good-faith statements made by someone with a legitimate interest or duty to communicate, such as an employer giving an honest reference. The protection can be lost if the speaker acted with actual malice or went beyond the scope of the legitimate purpose.
Online Posts and Section 230
Most modern defamation disputes involve material posted online: social media comments, reviews, blog posts, forum threads. The legal elements are the same as for print, but one federal statute affects who you can sue.
Section 230 of the Communications Decency Act provides that a website or social media platform cannot be treated as the “publisher or speaker” of content posted by its users.5Office of the Law Revision Counsel. 47 USC 230 – Protection for Private Blocking and Screening of Offensive Material If someone posts a defamatory review about you, you can sue the person who wrote it, but you generally cannot sue the platform for hosting it. Congress enacted the protection in part to encourage platforms to moderate content without fear of being held liable for everything their users post.6U.S. Department of Justice. Department of Justice’s Review of Section 230 of the Communications Decency Act of 1996
Anti-SLAPP Laws
A SLAPP, short for Strategic Lawsuit Against Public Participation, is a meritless lawsuit filed to intimidate someone into silence rather than to win on the law. A business might sue a customer who posted a negative but truthful review, counting on the cost and stress of litigation to pressure a takedown.
Thirty-nine states and the District of Columbia have anti-SLAPP statutes. These laws let a defendant file an early motion that forces the plaintiff to show the suit has genuine merit before the case can proceed. If the plaintiff can’t meet that threshold, the court dismisses the case, and in many states the plaintiff must pay the defendant’s attorney fees. Until the plaintiff clears the bar, the defendant is generally shielded from discovery.
Filing Deadlines
Defamation suits are subject to statutes of limitations, and missing the deadline almost always ends the case. The time limit varies by state, generally one to three years from when the statement was first communicated. One year is the most common deadline.
For online content, most courts apply the “single publication rule,” which starts the clock on the date the material was first posted. Later views or re-shares of the same post don’t restart it. If you think you’ve been defamed, the clock is already running, so an early call to a lawyer in your state is worth more than a late one.