Synonyms of extremist in English:

extremist

noun

  • with little to gain from moderation, the extremists rule the day
    fanatic, radical, zealot, fundamentalist, hardliner, dogmatist, bigot, diehard, militant, activist; sectarian, chauvinist, partisan
    informal ultra, maniac, crank
    [Antonyms] moderate
  • Definition of extremist in:

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    Word of the day flippant
    Pronunciation: ˈflɪp(ə)nt
    adjective
    not showing a serious or respectful attitude