counterterrorism

noun

coun·​ter·​ter·​ror·​ism ˌkau̇n-tər-ˈter-ər-ˌi-zəm 

variants or counter-terrorism

: measures designed to combat or prevent terrorism

an expert in counterterrorism

—often used before another noun

a local counterterrorism council

new counter-terrorism policies/measures

Examples of counterterrorism in a Sentence

Recent Examples on the Web

The ban and ensuing arrests prompted debate over free speech and the use of counterterrorism laws against political protest. — Miranda Jeyaretnam, Time, 15 Oct. 2026

At least a modest counterterrorism mission, and counterterrorism cooperation with regional partners, will remain necessary. — Philip H. Gordon, Foreign Affairs, 12 Oct. 2026

The arrests triggered a major counterterrorism investigation into the security breach at the strategic installation, which serves as a central intelligence hub supporting American military commanders across Europe and Africa. — Emma Bussey, FOXNews.com, 9 Oct. 2026

After her death, counterterrorism police reopened a probe into an alleged firebomb and break-in attempt at Farage’s south London home in April 2025. — ABC News, 9 Oct. 2026

Word History

First Known Use

1864, in the meaning defined above

Rhymes for counterterrorism

• absolutism
• adventurism
• aestheticism
• africanism
• agnosticism
• alcoholism
• anachronism
• anglicanism
• antagonism
• arianism
• asceticism
• astigmatism