Defamation of character in Missouri is a civil claim built on six elements, filed within two years, and governed by a unified framework that treats libel and slander alike. A plaintiff must prove the defendant published a false, defamatory statement identifying the plaintiff, that the defendant was at fault in making it, and that the plaintiff’s reputation was actually harmed. Miss any element and the claim fails.
The Six Elements a Plaintiff Must Prove
Every Missouri defamation case turns on the same six elements: publication of a statement, that the statement was defamatory, that it identified the plaintiff, that it was false, that the defendant was at fault, and that the plaintiff’s reputation suffered damage.
Publication has a low bar. It does not require a newspaper or broadcast. The statement only needs to reach at least one person other than the plaintiff. An email, a social media post, or a remark to a coworker all qualify. What the statement cannot be is pure opinion; it has to be presented as a factual assertion, which is where many claims stall.
Identification means a reasonable listener or reader would understand the statement to be about the plaintiff, whether or not the plaintiff was named. Falsity is the plaintiff’s burden to establish, not the defendant’s burden to disprove. Damage means measurable harm to reputation, discussed further below.
Fault Depends on Who You Are
The fault element shifts based on the plaintiff’s status. Private individuals need to show the defendant was negligent, meaning a reasonable person would have checked the facts before making the statement. Missouri adopted this standard under the U.S. Supreme Court’s decision in Gertz v. Robert Welch, Inc.
Public officials and public figures have a much steeper climb. They must prove “actual malice,” a legal term meaning the defendant either knew the statement was false or acted with reckless disregard for whether it was true. That standard comes from New York Times Co. v. Sullivan and exists to give public debate room to breathe, even when the criticism turns out to be wrong.1Justia. New York Times Co. v. Sullivan, 376 U.S. 254 (1964)
Libel or Slander, One Set of Rules
Most states divide defamation into libel (written) and slander (spoken) and apply different rules to each, particularly around damages. Missouri does not. In Nazeri v. Missouri Valley College (1993), the Missouri Supreme Court eliminated the old distinction between defamation “per se” and defamation “per quod,” holding that “in defamation cases the old rules of per se and per quod do not apply and plaintiff need only to plead and prove the unified defamation elements.”2Justia. Nazeri v. Missouri Valley College (1993)
The practical consequence is significant. In many states, certain categories of statements, such as accusations of a crime or attacks on someone’s professional competence, are treated as so inherently damaging that no proof of specific harm is required. Missouri rejects that shortcut. Every plaintiff, in every case, has to prove actual damages. Plaintiffs who assume a shocking accusation speaks for itself often find that assumption is fatal to the claim.
What Damages Look Like
Actual damages in a Missouri defamation case means proof of impairment to reputation. The Missouri Supreme Court has held that emotional distress by itself is not enough. Reputational harm can appear as lost business, damaged professional standing, or being shunned in the community, but the plaintiff needs evidence tying that harm to the defamatory statement.
Punitive damages may be available on top of compensatory damages, but the threshold is high. Missouri law requires clear and convincing evidence that the defendant either intentionally harmed the plaintiff without just cause or acted with deliberate and flagrant disregard for the safety of others.3Missouri Revisor of Statutes. Missouri Code 510.261 – Punitive Damages, Restrictions on Award of
Missouri statutes cap punitive damages at the greater of $500,000 or five times the compensatory judgment.4Missouri Revisor of Statutes. Missouri Code 510.265 – Limitations on Punitive Damages in Certain Cases The Missouri Supreme Court struck that cap down in Lewellen v. Franklin (2014) as violating the right to a jury trial under the Missouri Constitution, but that case involved fraud, and whether the ruling extends to defamation is unsettled. Expect the cap’s applicability to be litigated rather than assumed.
The Two-Year Filing Deadline
You have two years to file a defamation lawsuit in Missouri, and the deadline applies to both libel and slander.5Missouri Revisor of Statutes. Missouri Revised Statutes 516.140 – What Actions Within Two Years Miss it and the claim is almost always dead, no matter how strong the underlying facts.
When the clock starts is not always obvious. For libel, it generally runs from publication. For slander, Missouri case law holds that the limitations period may begin when the resulting damages become apparent rather than when the words were spoken. That distinction matters most when a plaintiff learns of a defamatory remark long after it was made.
Defenses to a Missouri Defamation Claim
Defendants in Missouri have real ammunition, and many defamation claims collapse before trial because of it.
Truth
A substantially true statement cannot be defamatory. Missouri’s rules of civil procedure list truth as an affirmative defense, and a defendant can also introduce mitigating circumstances to reduce damages if the truth defense does not fully carry the day.6Missouri Revisor of Statutes. Missouri Code 509.210 – Libel and Slander, Averments – Defenses The defendant carries the burden, but perfection is not required. If the “gist” or “sting” of the statement is accurate, minor inaccuracies do not defeat the defense.
Privilege
Missouri recognizes absolute and qualified privilege. Absolute privilege gives complete immunity regardless of intent or accuracy, and it applies in narrow settings where uninhibited communication is essential. Statements made during judicial proceedings are the leading example, provided they are relevant to the matter. Legislators enjoy the same protection for statements in official proceedings.
Qualified privilege is broader but easier to lose. It protects good-faith communications where the speaker and listener share a legitimate interest in the topic. An employer giving a reference about a former employee is the classic case. Missouri statute grants employers immunity for reference responses unless the information was false and given with knowledge of its falsity or reckless disregard for the truth.7Missouri Revisor of Statutes. Missouri Code 290.152 – Employer Immunity for References A plaintiff can defeat qualified privilege by showing actual malice or that the speaker used the occasion to spread information beyond what was reasonably necessary.
Opinion
Pure opinion is constitutionally protected. Missouri courts decide the opinion-versus-fact question as a matter of law, looking at the words’ common meaning, whether the statement can be objectively verified, the full context in which it appeared, and whether the audience would reasonably read it as a personal view. Heated rhetoric, name-calling, and hyperbole tend to fall on the opinion side. “That contractor is the worst in town” reads as opinion. “That contractor used substandard materials on the Jones project” asserts a verifiable fact and can be defamatory if false.
Online Statements and Platform Immunity
When the defamatory statement appears online, Section 230 of the federal Communications Decency Act shapes who you can sue. The statute provides that no provider or user of an interactive computer service may be treated as the publisher or speaker of content posted by someone else.8Office of the Law Revision Counsel. 47 U.S. Code 230 – Protection for Private Blocking and Screening of Offensive Material
Social media platforms, review sites, and web hosts are therefore generally immune from defamation liability for what their users post. Your claim runs against the person who wrote the statement, not the site that carried it. That often creates practical problems: identifying an anonymous poster may require a subpoena, and once identified, the person may lack the resources to pay a judgment.
Section 230 does not protect the individual author. Posting a false statement of fact about someone on social media exposes you to the same liability as printing it in a newspaper.
Missouri’s Anti-SLAPP Law Is Narrow
Missouri has an anti-SLAPP statute, but its reach is limited and worth understanding before you count on it. The law protects speech and conduct at public hearings or meetings in quasi-judicial proceedings before government bodies, such as city council meetings, planning commission hearings, and zoning board reviews. Statements made in those settings are immune from civil liability as long as the speech is aimed at influencing a government action or outcome.9Missouri Revisor of Statutes. Missouri Revised Statutes 537.528 – Actions for Damages for Conduct or Speech at Public Hearings
A qualifying defendant can file a special motion to dismiss that the court hears on an expedited basis, with discovery suspended while it is pending. The plaintiff must then produce clear and convincing evidence that the speech is not protected, and a successful motion carries attorney fees for the defendant.
The critical boundary: Missouri’s anti-SLAPP law does not cover general public commentary, blog posts, online reviews, or media publications. If the alleged defamation happened on Yelp, in a Facebook thread, or in a news article, this statute will not help. Defendants in those cases rely on truth, privilege, opinion, and the fault standards described above.