Fanaticism

fanaticism
    n 1: excessive intolerance of opposing views [syn: {fanaticism},
         {fanatism}, {zealotry}]
    

Fanaticism \Fa*nat"i*cism\, n. [Cf. {Fanatism}.]
   Excessive enthusiasm, unreasoning zeal, or wild and
   extravagant notions, on any subject, especially religion,
   politics or ideology; religious frenzy.

   Syn: See {Superstition}.
        [1913 Webster]
    

150 Moby Thesaurus words for "fanaticism":
      agitation, authoritarianism, balkiness, bias, bibliolatry, bigotry,
      blind side, blind spot, blinders, bluster, brawl, broil, brouhaha,
      bullheadedness, cacophony, chaos, charismatic gift,
      charismatic movement, charismatic renewal, closed mind, commotion,
      cramped ideas, dedication, determination, devotedness, devotion,
      disturbance, doggedness, dogmatism, ebullition, embroilment,
      enthusiasm, excessiveness, extravagance, extremeness, extremism,
      fanaticalness, ferment, fervor, fixed mind, flap, fomentation,
      foofaraw, franticness, frenzy, fume, furor, furore, fury, fuss,
      gift of tongues, glossolalia, hardheadedness, headstrongness,
      hideboundness, hubbub, hysteria, illiberality, infatuation,
      inflexible will, insularism, insularity, intolerance,
      little-mindedness, littleness, madness, mania, mean mind, meanness,
      monomania, mulishness, narrow sympathies, narrow views,
      narrow-mindedness, narrowness, nearsightedness, obduracy,
      obsessiveness, obstinacy, obstinateness, odium theologicum,
      opinionatedness, overambitiousness, overanxiety, overanxiousness,
      overdevoutness, overeagerness, overenthusiasm, overpiousness,
      overreaction, overreligiousness, overrighteousness,
      overzealousness, pandemonium, parochialism, partiality, passion,
      pentecostalism, perfervidness, perseverance, pertinacity,
      pettiness, petty mind, pigheadedness, prejudice, provincialism,
      purblindness, rabidness, racket, rage, restiveness, revival,
      revivalism, row, ruckus, rumpus, sanctimony, self-will,
      shortsightedness, shut mind, single-mindedness, smallness,
      stiff neck, stiff-neckedness, storminess, straitlacedness,
      strongheadness, stubbornness, stuffiness, sulkiness, sullenness,
      tempestuousness, tenaciousness, tenacity, tumult, tumultuousness,
      turbulence, turmoil, ultrazealousness, uncatholicity,
      uncooperativeness, unregenerateness, uproar, upset, wildness,
      willfulness, zeal, zealotism, zealotry, zealousness