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Synonyms for radical

modified

  1. Fundamental

    basic, original, primitive, underlying; see fundamental 1, organic.

  2. Advocating extreme change

    extremist, revolutionary, fanatical, militant, rabid, insurgent, iconoclastic, advanced, forward, insurrectionary, progressive, revisionist, abolitionist, leftist, communistic, left-wing, uncompromising, intransigent, recalcitrant, mutinous, rebellious, recusant, subversive, seditious, riotous, lawless, ultraconservative, racist, white supremacist, insubordinate, anarchistic, nihilistic, Bolshevistic, Communist, socialist, liberal, immoderate, heretical, freethinking, avant-garde, Jacobinic, ultraist, ultraistic, ultra, red*, pink*; see also fanatical, rebellious 2, revolutionary 1.

    Antonyms conservative*, reformist, gradualist.

  3. Thoroughgoing

    extreme, drastic, thorough, complete; see comprehensive, extreme 2. See syn. study at liberal.

noun

extremist, militant, revolutionary, fanatic, insurgent, objector, revolutionist, insurrectionist, leftist, anarchist, socialist, communist, pacifist, syndicalist, nihilist, ultraist, ultra, subversive, rebel, revolter, mutineer, firebrand, Jacobin, sans-culotte, Bolshevik, Bolshevist, anarcho-syndicalist, renegade, crusader, individualist, fascist, Nazi, racist, white supremacist, misfit, iconoclast, member of the lunatic fringe, eccentric, freethinker, rightist, yippie, hippie, Black nationalist, demonstrator, peace marcher, rioter, fifth columnist, nonconformist, left-winger, right-winger, ultraconservative, John Bircher, pinko*, red*; see also agitator, rebel 1.

See radical in Webster's New World Roget's A-Z Thesaurus II

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