fanaticism

[1]	fanatism , devotion , dedication , zealotry , devotedness , infatuation , enthusiasm , fervour , zeal , obsessiveness , franticness , frenzy , hysteria
[2]	monomania , single-mindedness , mania , madness , extremism , intolerance , bigotry , bias , partiality , prejudice , narrow-mindedness , close-mindedness