| defamer(noun, rival, opponent, competitor, adversary) |
| defiler(noun, rival, opponent, competitor, adversary) |
| detractor(noun, rival, opponent, competitor, adversary) |
| disputant(noun, rival, opponent, competitor, adversary) |
| emulator(noun, rival, opponent, competitor, adversary) |
| falsifier(noun, rival, opponent, competitor, adversary) |
| fifth column(noun, expression, rival, opponent, competitor) |
| guerrilla(noun, rival, opponent, competitor, adversary) |
| informer(noun, rival, opponent, competitor, adversary) |
| inquisitor(noun, rival, opponent, competitor, adversary) |
| invader(noun, rival, opponent, competitor, adversary) |
| murderer(noun, rival, opponent, competitor, adversary) |
| opposition(noun, rival, opponent, competitor, adversary) |
| other side(noun, expression, rival, opponent, competitor) |
| prosecutor(noun, rival, opponent, competitor, adversary) |
| rebel(noun, rival, opponent, competitor, adversary) |
| revolutionary(noun, rival, opponent, competitor, adversary) |
| saboteur(noun, rival, opponent, competitor, adversary) |
| seditionist(noun, rival, opponent, competitor, adversary) |
| slanderer(noun, rival, opponent, competitor, adversary) |