defection

noun

de·​fec·​tion di-ˈfek-shən How to pronounce defection (audio)
: conscious abandonment of allegiance or duty (as to a person, cause, or doctrine) : desertion

Examples of defection in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
There were reports for a decade that his defection was imminent and even an erroneous report by a major outlet that a defection had happened. Kevin Acee, San Diego Union-Tribune, 23 Mar. 2025 By focusing on trust, addressing silent defection, and deploying AI judiciously, CCOs can turn challenges into opportunities. Blake Morgan, Forbes, 21 Mar. 2025 House Republicans suffered just one defection on Tuesday despite very, very public complaints from GOP lawmakers about the package being pushed forward. Philip Elliott, TIME, 12 Mar. 2025 Johnson needs near-unanimous GOP support and can only afford to lose one Republican before a second defection would defeat the bill if all members are voting and present. Lauren Peller, ABC News, 11 Mar. 2025 See All Example Sentences for defection

Word History

Etymology

borrowed from Latin dēfectiōn-, dēfectiō "falling short, failure, abandonment of allegiance," from dēficere "to be lacking, fail, become disaffected, go over (to the side of an opponent)" + -tiōn-, -tiō, suffix of verbal action — more at deficient

First Known Use

1532, in the meaning defined above

Time Traveler
The first known use of defection was in 1532

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Cite this Entry

“Defection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/defection. Accessed 19 Apr. 2025.

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