1) Addict 2) Admirer 3) Aficionada 4) Backslapper 5) Balletomane 6) Booster 7) Devotee 8) Fan 9) Fanatic 10) Fancier 11) Follower 12) Gadgeteer 13) Nut 14) Obsessive 15) Shutterbug 16) Supporter 17) Technophile 1) Admirer 2) Booster 3) Champion 4) Friend 5) Partisan 6) Partizan 7) Protagonist 8) Supporter 
• (n.) 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.Enthusiast: words in ...
En·thu'si·ast noun [ Greek ...: confer French enthousiaste .] 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 e...
[n] - an ardent and enthusiastic supporter of some person or activity
enthusiast 1. Someone who is very interested or involved in something; especially, somebody with a particular hobby. 2. Etymology: from Greek enthkousiaste,, 'anyone inspired (by a god)', from enthous.
partisan 1 partizan noun an ardent and enthusiastic supporter of some person or activity
a person who is filled with enthusiasm for some principle, pursuit, etc.; a person of ardent zeal: a sports enthusiast. · a religious visionary or fanatic.