| extremist(adjective, concern, enthusiastic, ill, extreme) |
| dogmatic(adjective, hateful, fervent, zealous, impatient) |
| eager(adjective, strong, keen, warm, intense) |
| fervid(adjective, strong, moving, keen, warm) |
| feverish(adjective, feeling, excited, nervous, fervent) |
| frenetic(adjective, keen, passionate, enthusiastic, excited) |
| obstinate(adjective, unreasonable, fervent, rigid, inflexible) |
| starstruck |
| extravagant |
| fiery(adjective, moving, keen, passionate, eager) |
| headstrong(adjective, fervent, rash, zealous, volatile) |
| hooked(adjective, passionate, enthusiastic, crazy, absorbed) |
| intense(adjective, strong, severe, keen, energetic) |
| intolerant(adjective, enthusiastic, ill, sick, fervent) |
| monomaniacal(adjective, fervent, desirous, zealous, dedicated) |
| narrow-minded(adjective, enthusiastic, ill, sick, hateful) |
| obsessive(adjective, keen, passionate, enthusiastic, excited) |
| opinionated(adjective, unreasonable, fervent, rigid, strict) |
| perfervid(adjective, keen, passionate, eager, ardent) |
| stubborn(adjective, unreasonable, fervent, rigid, inflexible) |