Enthusiast
Pronunciation : En*thu"si*ast
Part of Speech : n.
Etymology : [Gr. enthousiaste.]
Definition : Defn: One moved or actuated by enthusiasm; as: (a) One who imagines himself divinely inspired, or possessed of some special revelation; a religious madman; a fanatic. (b) One whose mind is wholly possessed and heated by what engages it; one who is influenced by a peculiar; fervor of mind; an ardent and imaginative person. Enthusiasts soon understand each other. W. Irving.
Syn. -- Visionary; fanatic; devotee; zealot.
Source : Webster's Unabridged Dictionary, 1913