noun
counterintelligence
noun
1
Activities aimed at detecting and stopping enemy spying or intelligence operations.
"The agency's counterintelligence division tracked the foreign spy for months."
How to Use Counterintelligence
Learner’s notesIn plain EnglishEfforts to catch and stop enemy spies rather than gather intelligence on them.
Word Forms
counterintelligences plural
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The agency's _____ division tracked the foreign spy for months.
Etymology
From counter- + intelligence.