terrorism

noun

ter·​ror·​ism ˈter-ər-ˌi-zəm 

: the systematic use of terror especially as a means of coercion

Examples of terrorism in a Sentence

They have been arrested for acts of terrorism.

Recent Examples on the Web

Anthony Dekinderen, 61, was arraigned Saturday in 52-3 District Court in Rochester Hills on nine counts of false report or threat of terrorism, each a 20-year felony. — CBS News, 21 Sep. 2026

Yigal Carmon, a conservative retired colonel in Israeli military intelligence and the founder of MEMRI, a research center that monitors media across the Muslim world, had spent years insisting that Qatar was a sponsor of terrorism. — Ruth Margalit, New Yorker, 19 Sep. 2026

The terrorism committed by Hamas on October 7 and the subsequent destruction of Gaza by Israeli forces are not the same. — Literary Hub, 18 Sep. 2026

The latest Piker rhetorical bomb El-Sayed had to dodge was the streamer’s assertion in an interview with Axios, excerpts of which were posted Thursday, that the United States is more of a fomenter of terrorism than al-Qaeda. — The Editorial Board, Chicago Tribune, 18 Sep. 2026

Word History

First Known Use

1795, in the meaning defined above

Phrases Containing terrorism

• anti-terrorism
• counter-terrorism
• narco-terrorism
• state terrorism

Rhymes for terrorism

• autism
• fascism
• racism
• sikhism
• sophism
• statism
• sufism
• thomism
• tourism
• tropism
• abolitionism
• aldosteronism

Kids Definition

terrorism

noun

ter·​ror·​ism ˈter-ər-ˌiz-əm 

: the use of terror as a means of achieving a goal

terrorist

-ər-əst 

adjective or noun

Legal Definition

terrorism

noun

ter·​ror·​ism ˈter-ər-ˌi-zəm 

1

: the unlawful use or threat of violence especially against the state or the public as a politically motivated means of attack or coercion

2

: violent and intimidating gang activity

street terrorism

terrorist

-ist 

adjective or noun

terroristic

ˌter-ər-ˈis-tik 

adjective