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terrorist

American  
[ter-er-ist] / ˈtɛr ər ɪst /

noun

  1. a person, usually a member of a group, who uses or advocates terrorism.

  2. a person who terrorizes or frightens others.

  3. (formerly) a member of a political group in Russia aiming at the demoralization of the government by terror.

  4. an agent or partisan of the revolutionary tribunal during the Reign of Terror in France.


adjective

  1. of, relating to, or characteristic of terrorism or terrorists.

    terrorist tactics.

terrorist British  
/ ˈtɛrərɪst /

noun

    1. a person who employs terror or terrorism, esp as a political weapon

    2. ( as modifier )

      terrorist tactics

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of terrorist

First recorded in 1785–95; terror + -ist; compare French terroriste

Explanation

Someone who uses violence, mayhem, and destruction — or the threat of those things — to coerce people or countries into taking a certain action is a terrorist. A terrorist may be motivated by religious fervor, politics, or just plain old-fashioned greed. Terrorist has at its root the word "terror," which comes from the Latin word terrorem, meaning great fear. Great fear is exactly what terrorists hope to create so they can manipulate the situation to their benefit. The label terrorist is a subjective one. To the British, the American colonists who destroyed shiploads of tea in Boston Harbor in 1773 were terrorists. To colonists, they were patriots and heroes.

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Vocabulary lists containing terrorist

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A US State Department official alleged to AFP that the referee was "associated with suspected members of terrorist organizations," therefore "making the traveler ineligible for admission to the United States."

From Barron's • Jun. 10, 2026

He shared an Overseas Press Club award for coverage of the eurozone’s debt crisis and a New York Press Club award for coverage of the Nov. 13, 2015 terrorist attacks in Paris.

From The Wall Street Journal • Jun. 8, 2026

A statement said troop movements in the area require coordination with the IDF, and repeated that its forces "are operating against the Hezbollah terrorist organisation, not against the Lebanese Army".

From BBC • Jun. 6, 2026

Some digital investments seemed wild at the time, like when Diller stuck with his bid for Expedia after the Sept. 11, 2001, terrorist attacks halted flights and damped travel demand.

From The Wall Street Journal • Jun. 2, 2026

Also, each accused terrorist is considered an "enemy combatant" and denied some legal protection.

From Nazi Saboteurs by Samantha Seiple

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