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Synonyms

defamation

American  
[def-uh-mey-shuhn] / ˌdɛf əˈmeɪ ʃən /

noun

  1. the act of defaming; false or unjustified injury of the good reputation of another, as by slander or libel; calumny.

    She sued the magazine for defamation of character.


defamation British  
/ ˌdɛfəˈmeɪʃən /

noun

  1. law the injuring of a person's good name or reputation Compare libel slander

  2. the act of defaming or state of being defamed

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Commonly Confused

See slander.

Etymology

Origin of defamation

First recorded in 1275–1325; Middle English; replacing (by analogy with defame ) Middle English diffamacioun, from Medieval Latin diffāmātiōn- (stem of diffāmātiō ), equivalent to Latin diffāmāt(us) (past participle of diffāmāre; defame ) + -iōn- noun suffix ( see -ion)

Explanation

Defamation is a dirty trick against someone's reputation. If you were so furious at your friend that you spread a rumor that he was still wetting his bed, that would be defamation of your friend. The noun defamation describes something very mean and completely deliberate, essentially a false accusation against someone or an attack on a person's good reputation. The terms libel and slander — written or spoken lies about a person, group, or business — both fall under the category of defamation. Sometimes defamation is even a punishable crime, and in every instance it's unkind and malicious.

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Vocabulary lists containing defamation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He essentially owes his position as president to Sonko, his one-time mentor who would almost certainly have taken the top job had he not been barred from the presidential election due to a defamation conviction.

From Barron's • May 26, 2026

TMTG, which has sued MarketWatch for defamation over an earlier article, has plenty of cash.

From MarketWatch • May 18, 2026

The lawsuit cites multiple grievances, including privacy violations, negligence and defamation.

From The Wall Street Journal • May 16, 2026

Lawyers in Israel specialising in defamation told the BBC that while there were ways the state could bring the case to court there, it would be challenging.

From BBC • May 15, 2026

During 33 BCE, disagreements and mistrust turned to public accusations and defamation.

From "Sterling Biographies®: Cleopatra: Egypt's Last and Greatest Queen" by Susan Blackaby

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