| fifth column(noun, expression, attacker, competitor, adversary) |
| contradictor(noun, attacker, competitor, adversary, detractor) |
| corrival(noun, opponent, enemy, adversary, foe) |
| criticizer(noun, attacker, competitor, adversary, detractor) |
| defiler(noun, associate, attacker, competitor, adversary) |
| disputant(noun, fan, attacker, competitor, adversary) |
| saboteur(noun, associate, attacker, competitor, adversary) |
| seditionist(noun, associate, attacker, competitor, adversary) |
| traitor(noun, attacker, competitor, adversary, detractor) |
| libeler(noun, defamer, disparager, traducer, slanderer) |
| maligner(noun, defamer, disparager, traducer, slanderer) |
| muckraker(noun, defamer, disparager, traducer, slanderer) |
| nemesis(noun, defamer, disparager, traducer, slanderer) |
| rat(companion, friend, buddy, comrade, pal) |
| recipient |
| scandalmonger(noun, defamer, disparager, traducer, slanderer) |
| villain(noun, attacker, competitor, adversary, detractor) |
| mentee |
| bohemian |
| mentor |