Synonyms of radical in English:

radical


See definition of radical

adjective

1‘radical reform is long overdue’

SYNONYMS

thoroughgoing, thorough, complete, total, entire, absolute, utter, comprehensive, exhaustive, root-and-branch, sweeping, far-reaching, wide-ranging, extensive, profound, drastic, severe, serious, major, desperate, stringent, violent, forceful, rigorous, draconian

ANTONYMS

superficial

2‘the apparently radical differences between logic and natural language’

SYNONYMS

fundamental, basic, essential, quintessential

inherent, innate, structural, deep-seated, intrinsic, organic, constitutive, root

ANTONYMS

minor

3‘a radical political movement’

SYNONYMS

revolutionary, progressive, reforming, reformist, revisionist, progressivist

leftist, left-wing, socialist, anti-capitalist

extreme, extremist, fanatical, militant, diehard

informal red

British informal swivel-eyed

derogatory Bolshevik

ANTONYMS

conservative, reactionary, moderate


noun

1‘he was by no means a radical’

SYNONYMS

revolutionary, progressive, reformer, revisionist

leftist, left-winger, socialist

militant, zealot, extremist, fanatic, diehard

informal ultra, red

derogatory Bolshevik, Bolshevist

ANTONYMS

conservative, reactionary, moderate