| crazy(noun, radical, fanatic, freak, visionary) |
| zealot(noun, original, radical, fan, fanatic) |
| bigot(noun, person, radical, fanatic, intolerant) |
| crank(noun, original, radical, obsession, freak) |
| enthusiast(noun, interest, radical, fan, fanatic) |
| fanatic(noun, interest, original, radical, fan) |
| maniac(noun, radical, fan, fanatic, intolerant) |
| devotee(noun, supporter, radical, fan, follower) |
| diehard |
| fiend(noun, interest, radical, fanatic, intolerant) |
| nut(noun, supporter, radical, fan, fanatic) |
| aficionado(noun, supporter, fan, follower, fanatic) |
| bedlamite(fanatic, dingbat, madman, ultraist) |
| buff(noun, supporter, fan, follower, fanatic) |
| bug(noun, supporter, radical, fan, follower) |
| dipsomaniac(noun, madman) |
| doctrinaire |
| fan(noun, supporter, follower, fanatic, freak) |
| freak(noun, supporter, radical, fan, follower) |
| kleptomaniac(noun, madman) |