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
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Its commentary on political extremism, religious tribalism and the erosion of nuance is uniquely relevant, with episodes that spark conversation across ideological lines without resorting to provocation for provocation’s sake. Michael Schneider, Variety, 16 Apr. 2026 Today’s Democratic moderates will forever be tarred with the left’s extremism and its willingness to sacrifice the interests of the country on the altar of political expediency. Chris Roemer, Baltimore Sun, 16 Apr. 2026 The predawn Molotov cocktail attack on Sam Altman’s San Francisco home has signaled a volatile new era of anti-tech extremism, sparking fears among federal authorities that this could ignite a wave of copycat strikes against high-profile executives. Sarah Rumpf-Whitten , Brooke Taylor, FOXNews.com, 14 Apr. 2026 In his best moments, former CPS CEO Pedro Martinez served as a counterweight to this kind of CTU extremism. The Editorial Board, Chicago Tribune, 8 Apr. 2026 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

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Cite this Entry

“Extremism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extremism. Accessed 20 Apr. 2026.

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

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