defamation

noun

def·​a·​ma·​tion ˌde-fə-ˈmā-shən 

law

: the act of communicating false statements about a person that injure the reputation of that person : the act of defaming another

defamation of character

a defamation lawsuit

also : a communication that defames

repeated the defamation

defamatory

di-ˈfa-mə-tȯr-ē 

dē-

adjective

Did you know?

Harming someone's reputation in speech with falsehoods is known as slander, and doing the same thing in writing is known as libel (which sometimes includes speech as well). Any ordinary citizen who can claim to have suffered harm as a result of such defamation may sue. So why aren't politicians suing all the time? Because an exception is made for "public persons" (a category that includes most other celebrities as well), who must also prove that any such statement was made with "reckless disregard for the truth". And although, even by that standard, public persons are defamed all the time, most of them have decided that it's better to just grin and bear it.

Synonyms of defamation

• libel
• defaming
• libeling

Examples of defamation in a Sentence

The article was full of lies and defamations.

accused the newspaper columnist of defamation of character

Recent Examples on the Web

While ruling on the key question of defamation in Figliuzzi's favor, the judge denied his request that he be awarded court costs and attorneys' fees under Texas' anti-SLAPP law. —Dan Mangan, CNBC, 22 Apr. 2026

MacInnes is suing Wilson for defamation in Australia, with details from behind the scenes on The Deb — Wilson’s directorial debut — emerging as part of a federal court trial in Sydney this week. —Jake Kanter, Deadline, 22 Apr. 2026

His off-camera thoughts were revealed when internal communications between Fox staffers went public in 2023 due to Dominion Voting Systems’ defamation lawsuit against Fox News for knowingly broadcasting false claims that its machines rigged the 2020 election. —Lorraine Ali, Los Angeles Times, 22 Apr. 2026

To investigate the allegations, the company hired Alex Spiro, a lawyer known for aggressively representing Elon Musk — including in defamation cases and litigation related to purchasing Twitter — and Eric Adams when he was charged with corruption. —Irin Carmon, Vulture, 22 Apr. 2026

Word History

Etymology

see defame

First Known Use

14th century, in the meaning defined above

Phrases Containing defamation

• anti-defamation

Rhymes for defamation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Legal Definition

defamation

noun

de·​fa·​ma·​tion ˌde-fə-ˈmā-shən 

1

: communication to third parties of false statements about a person that injure the reputation of or deter others from associating with that person see also libel, slander, New York Times Co. v. Sullivan compare disparagement, false light, slander of title

2

: a defamatory communication

every repetition of the defamation is a publication

—W. L. Prosser and W. P. Keeton