extremist

extremist
    adj 1: (used of opinions and actions) far beyond the norm;
           "extremist political views"; "radical opinions on
           education"; "an ultra conservative" [syn: {extremist},
           {radical}, {ultra}]
    n 1: a person who holds extreme views
    

Extremist \Ex*trem"ist\, n.
   A supporter of extreme doctrines or practice; one who holds
   extreme opinions.
   [1913 Webster]
    

75 Moby Thesaurus words for "extremist":
      Bolshevik, Fabian, Jacobin, Wobbly, agitator, anarchist,
      anarchistic, anarcho-syndicalist, bigoted, brawler, extravagant,
      extreme, extreme left-winger, extremistic, fanatic, frondeur,
      haggard, inordinate, insubordinate, insurgent, insurrectionary,
      insurrectionist, insurrecto, irrational, left-wing extremist,
      lunatic fringe, malcontent, maverick, meliorist, mild radical,
      mildly radical, mutineer, nihilist, nihilistic, nonconformist,
      overenthusiastic, overreligious, overzealous, parlor Bolshevik,
      parlor pink, perfervid, pink, pinko, progressionist, progressist,
      progressive, progressivist, rabid, radical, rebel, red, reformer,
      reformist, revisionist, revolter, revolutional, revolutionary,
      revolutionist, rioter, sans-culotte, subversive, syndicalist,
      traitor, ultra, ultraconservative, ultraist, ultraistic,
      ultrazealous, unreasonable, utopian, utopist, wild-eyed,
      wild-looking, yippie, zealotic