[ ter-er-ist ]
/ ˈtɛr ər ɪst /


a person, usually a member of a group, who uses or advocates terrorism.
a person who terrorizes or frightens others.
(formerly) a member of a political group in Russia aiming at the demoralization of the government by terror.
an agent or partisan of the revolutionary tribunal during the Reign of Terror in France.


of, relating to, or characteristic of terrorism or terrorists: terrorist tactics.

Origin of terrorist

1785–95; terror + -ist; compare French terroriste

Related forms

ter·ror·is·tic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for terrorist

British Dictionary definitions for terrorist


/ (ˈtɛrərɪst) /


  1. a person who employs terror or terrorism, esp as a political weapon
  2. (as modifier)terrorist tactics

Derived Forms

terroristic, adjective
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