counterintelligence
noun
coun·ter·in·tel·li·gence
ˌkau̇n-tər-in-ˈte-lə-jən(t)s 
: organized activity of an intelligence service designed to block an enemy's sources of information, to deceive the enemy, to prevent sabotage, and to gather political and military information
Examples of counterintelligence in a Sentence
Recent Examples on the Web
The center brings together counterterrorism, cyber, counterintelligence and financial investigators and specialists from the Treasury Department and IRS to trace funding streams, identify criminal actors and build prosecutable cases.
—
Asra Q. Nomani , Morgan Phillips,
FOXNews.com,
2 July 2026
LaCroix has taught a variety of subjects including cybercrime, counterterrorism, critical infrastructure protection, intelligence, counterintelligence and Homeland Security legal and policy Issues.
—
Hunter Lacroix,
Baltimore Sun,
20 June 2026
The American Office of Strategic Services, the OSS, worked alongside their British counterparts in a counterintelligence coup that saved the world.
—
Boston Herald Editorial Staff,
Boston Herald,
6 June 2026
Gabriel Basso stars as Sutherland, a formerly low-level FBI agent who has taken on increasingly dangerous assignments as part of a counterintelligence group within the bureau called Night Action.
—
Rick Porter,
HollywoodReporter,
4 May 2026
See All Example Sentences for counterintelligence
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Asra Q. Nomani , Morgan Phillips,
FOXNews.com,
2 July 2026
LaCroix has taught a variety of subjects including cybercrime, counterterrorism, critical infrastructure protection, intelligence, counterintelligence and Homeland Security legal and policy Issues.
—
Hunter Lacroix,
Baltimore Sun,
20 June 2026
The American Office of Strategic Services, the OSS, worked alongside their British counterparts in a counterintelligence coup that saved the world.
—
Boston Herald Editorial Staff,
Boston Herald,
6 June 2026
Gabriel Basso stars as Sutherland, a formerly low-level FBI agent who has taken on increasingly dangerous assignments as part of a counterintelligence group within the bureau called Night Action.
—
Rick Porter,
HollywoodReporter,
4 May 2026
See All Example Sentences for counterintelligence
Cite this Entry
“Counterintelligence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counterintelligence. Accessed 6 Jul. 2026.
Copy CitationKids Definition
counterintelligence
noun
coun·ter·in·tel·li·gence
ˌkau̇nt-ə-rin-ˈtel-ə-jən(t)s
: activities of an intelligence service meant to hide the truth from an enemy or to prevent the enemy from learning secret information
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