| radical(noun, adjective, person, concern, belief) |
| revolutionary(noun, adjective, person, concern, belief) |
| ultra(noun, adjective, person, concern, belief) |
| extreme(adjective, concern, enthusiastic, sick) |
| rabid(adjective, concern, violent, extreme) |
| ultraist(noun, adjective, belief, enthusiastic) |
| fanatical(adjective, concern, enthusiastic, extreme) |
| bigoted(adjective, enthusiastic, sick, fervent) |
| irrational(adjective, enthusiastic, sick, fervent) |
| berserk(adjective, enthusiastic, sick, fervent) |
| bitten(adjective, enthusiastic, sick, fervent) |
| corybantic(adjective, enthusiastic, sick, fervent) |
| crazed(adjective, enthusiastic, sick, fervent) |
| crazy(noun, adjective, enthusiastic, sick) |
| delirious(adjective, enthusiastic, sick, fervent) |
| deranged(adjective, enthusiastic, sick, fervent) |
| enthusiastic(adjective, sick, fervent, zealous) |
| fervent(adjective, enthusiastic, sick, zealous) |
| flipped(adjective, enthusiastic, sick, fervent) |
| foaming at the mouth(expression, adjective, idiom, enthusiastic) |