defender
Americannoun
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a person who defends someone or something from attack, assault, or injury.
We commemorate the brave defenders of this fort.
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Law. an attorney for a defendant, especially a public defender.
the systemwide benefits of effective defenders.
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a person who supports an argument, theory, thesis, etc., in the face of criticism or challenging questions.
defenders of gay rights.
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Sports.
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a team player whose assigned role is to prevent the other team from scoring.
On the court, he’s an exceptional defender and a natural leader.
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a contestant or team that attempts to retain a championship title, rank, etc., in a competition against a challenger.
Her main rival is the young title defender from Italy.
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Other Word Forms
Noun Inflected Forms
Etymology
Origin of defender
First recorded in 1300–50; Middle English; defend ( def. ) + -er 2 ( def. )
Vocabulary lists containing defender
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.
“If you buy a Defender for $70,000, it will be the best $120,000 you ever spent,” he joked.
From The Wall Street Journal • Jun. 29, 2026
Elliott, the web designer, said she’s spent an additional $31,000 on her Defender since buying it.
From The Wall Street Journal • Jun. 29, 2026
Defender Burn said that captain Kane, who scored twice in England's 4-2 win over Croatia in their opening World Cup match, is a "big country music fan".
From BBC • Jun. 20, 2026
Defender Morgan appears to have cemented her place as England's centre-back partner to captain Leah Williamson when she returns from injury.
From BBC • Jun. 9, 2026
“I hated discussing ideas with investors,” he said, “because I then become a Defender of the Idea, and that influences your thought process.”
From "The Big Short" by Michael Lewis
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.