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counterespionage

American  
[koun-ter-es-pee-uh-nahzh, -nij] / ˌkaʊn tərˈɛs pi əˌnɑʒ, -nɪdʒ /

noun

  1. the detection and frustration of enemy espionage.


counterespionage British  
/ ˌkaʊntərˈɛspɪəˌnɑːʒ /

noun

  1. activities designed to detect and counteract enemy espionage

"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

Etymology

Origin of counterespionage

First recorded in 1895–1900; counter- + espionage

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.

See Examples For:

After Lane Kiffin left Ole Miss, the Rebels launched a full-blown campaign of counterespionage, player signings and NIL fundraising to keep him from undermining their program.

From The Wall Street Journal May 22, 2026

The employee filed the complaint with the division director, Robert Turner, a 22-year veteran of the bureau who previously held roles in counterterrorism and counterespionage.

From Salon Nov. 18, 2025

L.A. was considered a small stage for spycraft, and members of the counterespionage squad “weren’t superstars like the agents in San Francisco and New York and Washington.”

From Los Angeles Times Apr. 23, 2025

China revised its already sweeping counterespionage law last year to expand the definition of spying and has warned repeatedly in recent months about the dangers of interactions with foreigners.

From New York Times Jan. 26, 2024

Blake's handlers inside the KGB went to great lengths to shield him from MI6's counterespionage teams, who were always on the lookout for traitors and double agents within their ranks.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau

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