The meaning of RADICAL is of, relating to, or proceeding from a root. How to use radical in a sentence.

RADICAL definition: 1. believing or expressing the belief that there should be great or extreme social or political…. Learn more.

If something is considered extremist or very different from anything that has come before it, call it radical.

Relating to or advocating fundamental or revolutionary changes in current practices, conditions, or institutions: radical politics; a radical political theorist.

a person holding radical views, esp. one favoring fundamental social or economic change

Nov 2, 2025 · radical (plural radicals) (historical, 19th-century Britain, politics) A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally …

The indicated root of a quantity or quantities, shown by an expression written under the radical sign.

Radical politics denotes the intent to transform or replace the fundamental principles of a society or political system, often through social change, structural change, revolution or radical reform. …

Radical, extreme, fanatical denote that which goes beyond moderation or even to excess in opinion, belief, action, etc. Radical emphasizes the idea of going to the root of a matter, and …

Definition of radical adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.