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
In a January letter, the prosecutor, Adán Vicente Santos Santos, claimed that the local court wrongly dismissed testimony of two counterintelligence officers from the Interior Ministry who accused Tristá Padilla of inciting two other men to publish antigovernment content on Facebook.
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Nora Gamez Torres, Miami Herald, 25 Sep. 2025
Eric O’Neill, a former FBI counterterrorism and counterintelligence operative, spoke to The Hill about the challenges of securing an outdoor venue.
—Rachel Wolf, FOXNews.com, 16 Sep. 2025
The Attorney General is often required to make decisions, with high stakes and on short notice, on an array of difficult matters, from blocking mergers to approving counterintelligence investigations to appealing cases to the Supreme Court.
—Ruth Marcus, New Yorker, 18 Aug. 2025
Wei, who had received Naval counterintelligence and insider threat training just days earlier, strongly suspected that his new social media acquaintance was a Chinese spy, prosecutors said.
—Alex Riggins, San Diego Union-Tribune, 13 Aug. 2025
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Nora Gamez Torres, Miami Herald, 25 Sep. 2025
Eric O’Neill, a former FBI counterterrorism and counterintelligence operative, spoke to The Hill about the challenges of securing an outdoor venue.
—Rachel Wolf, FOXNews.com, 16 Sep. 2025
The Attorney General is often required to make decisions, with high stakes and on short notice, on an array of difficult matters, from blocking mergers to approving counterintelligence investigations to appealing cases to the Supreme Court.
—Ruth Marcus, New Yorker, 18 Aug. 2025
Wei, who had received Naval counterintelligence and insider threat training just days earlier, strongly suspected that his new social media acquaintance was a Chinese spy, prosecutors said.
—Alex Riggins, San Diego Union-Tribune, 13 Aug. 2025
See All Example Sentences for counterintelligence
Cite this Entry
“Counterintelligence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counterintelligence. Accessed 1 Oct. 2025.
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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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