| leftist(noun, adjective, excessive, radical, thorough) |
| lunatic fringe |
| mad(adjective, enthusiastic, ill, sick, fervent) |
| mad-dog(adjective, enthusiastic, ill, sick, fervent) |
| militant(noun, adjective, radical, thorough, rebel) |
| narrow-minded(adjective, enthusiastic, ill, sick, fervent) |
| nihilist |
| nihilistic |
| nutty(adjective, enthusiastic, ill, sick, fervent) |
| objector(noun, radical, rebel, fanatic, progressive) |
| obsessed(adjective, enthusiastic, ill, sick, fervent) |
| overboard(adjective, enthusiastic, ill, sick, fervent) |
| pink |
| pinko |
| poisoned(adjective, enthusiastic, ill, sick, fervent) |
| raging(adjective, enthusiastic, ill, sick, fervent) |
| rebel |
| reformer(noun, radical, rebel, fanatic, progressive) |
| revolter(noun, radical, rebel, fanatic, progressive) |
| rioter(noun, radical, rebel, fanatic, progressive) |