radicalism

noun

rad·​i·​cal·​ism ˈra-di-kə-ˌli-zəm 

1

: the quality or state of being radical

2

: the doctrines or principles of radicals

Examples of radicalism in a Sentence

Recent Examples on the Web

Intellectually, the era was one of radical ferment, but radicalism worked on the canonical: D. H. Lawrence and Thomas Hardy remained royalty in schools and universities, thanks to the king-making attentions of Williams and F. R. Leavis. —Book Marks july 17, Literary Hub, 17 July 2025

He’s reached for the strains of liberalism and radicalism that have expressed themselves in the city in recent years, sometimes reaching for more than one at once. —Eric Lach, New Yorker, 23 June 2025

This is what happens when democracies turn a blind eye to growing ideological radicalism within their own borders. —Margaux Chetrit, Sun Sentinel, 29 May 2025

More broadly, Iranian American artists yearn for a future when Iran isn’t automatically conflated in American popular culture with theocracy, militancy and radicalism. —Dan Bilefsky, HollywoodReporter, 25 July 2025

Word History

First Known Use

1817, in the meaning defined at sense 1

Phrases Containing radicalism

• anti-radicalism

Rhymes for radicalism

• activism
• ageism
• albinism
• altruism
• aneurism
• animism
• aphorism
• atomism
• barbarism
• bolshevism
• botulism
• brahmanism

Kids Definition

radicalism

noun

rad·​i·​cal·​ism ˈrad-i-kə-ˌliz-əm 

: the quality or state of being radical