| fiend(noun, activity, person, concern, interest) |
| nut(noun, activity, person, part, character) |
| addict(noun, person, informal, nut, supporter) |
| enthusiast(noun, person, concern, interest, authority) |
| fan(noun, person, concern, interest, informal) |
| buff(noun, person, concern, informal, authority) |
| maniac(noun, person, concern, crazy, nut) |
| curiosity(noun, characteristic, item, wonder, someone) |
| zealot(noun, person, concern, crazy, advocate) |
| aficionado(noun, activity, person, authority, expert) |
| devotee(noun, person, concern, authority, advocate) |
| fanatic(noun, person, concern, interest, crazy) |
| monster(noun, being, usual, outrage, wonder) |
| monstrosity(noun, usual, outrage, horror, someone) |
| weirdo(noun, adjective, person, character, informal) |
| bug(noun, person, concern, informal, nut) |
| odd(adjective, unusual, wild, strange, crazy) |
| eccentric(noun, adjective, person, character, figure) |
| junkie(noun, activity, supporter, fan, attendant) |
| oddity(noun, character, figure, unusual, original) |