extremism

noun

ex·​trem·​ism ik-ˈstrē-ˌmi-zəm 

1

: the quality or state of being extreme

2

: advocacy of extreme measures or views : radicalism

extremist

ik-ˈstrē-mist 

noun or adjective

Examples of extremism in a Sentence

Recent Examples on the Web

As of Wednesday, Grok was still reporting that extremism on the right results in more deaths. —Miles Klee, Rolling Stone, 18 June 2025

But at that time, Boelter appeared to show no signs of the violent extremism of which he's now accused, Kalech said. —Sasha Pezenik, ABC News, 18 June 2025

Experts said conspiracy theories like the ones about Minnesota serve two aims: to make the political opposition appear evil and to pre-empt claims about extremism on your own side. —David Ingram, NBC news, 17 June 2025

Thanks to their progressive policies the state continues to spiral into a sea of extremism. —Nicole Russell, USA Today, 13 June 2025

Word History

First Known Use

1865, in the meaning defined at sense 1

Rhymes for extremism

• endemism

Kids Definition

extremism

noun

ex·​trem·​ism ik-ˈstrē-ˌmiz-əm 

1

: the quality or state of being extreme

2

: belief in and support for extreme ideas especially in politics

extremist

-məst 

noun or adjective