Dictionary
counterintelligence
noun coun·ter·in·tel·li·gence \ˌkau̇n-tər-in-ˈte-lə-jən(t)s\
: activity meant to hide the truth from an enemy or to prevent the enemy from learning secret information
Full Definition of COUNTERINTELLIGENCE
: 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
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First Known Use of COUNTERINTELLIGENCE
1940
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