extremism

noun

ex·​trem·​ism ik-ˈstrē-ˌmi-zəm How to pronounce extremism (audio)
Synonyms of extremismnext
1
: the quality or state of being extreme
2
: advocacy of extreme measures or views : radicalism
extremist noun or adjective

Examples of extremism in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Officials say father-son duo Sajid and Naveed Akram journeyed to a southern part of the archipelago nation that has endured a painful history of Islamic extremism. Jessie Yeung, CNN Money, 17 Dec. 2025 Peter D'Abrosca is a reporter at Fox News Digital covering campus extremism in higher education. Peter D'abrosca, FOXNews.com, 17 Dec. 2025 Investigators were, meanwhile, turning their attention to the suspects' alleged ISIS connection, including a trip to a southern island of the Philippines — seen in the past as a hot spot for extremism. Mithil Aggarwal, NBC news, 17 Dec. 2025 Advertisement Still, not everyone agrees that pandering to extremism is the problem. Charlie Campbell, Time, 15 Dec. 2025 See All Example Sentences for extremism

Word History

First Known Use

1865, in the meaning defined at sense 1

Time Traveler
The first known use of extremism was in 1865

Browse Nearby Words

Cite this Entry

“Extremism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extremism. Accessed 24 Dec. 2025.

Kids Definition

extremism

noun
ex·​trem·​ism ik-ˈstrē-ˌmiz-əm How to pronounce extremism (audio)
1
: the quality or state of being extreme
2
: belief in and support for extreme ideas especially in politics
extremist noun or adjective

More from Merriam-Webster on extremism

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!