| nonsupporter(noun, enemy, adversary, antagonist) |
| opponent(noun, opposition, enemy, attacker, competitor) |
| adversary(noun, opposition, opponent, enemy, attacker) |
| enemy(noun, opposition, friend, opponent, adversary) |
| antagonist(noun, person, friend, opponent, enemy) |
| competitor(noun, opponent, enemy, attacker, adversary) |
| foe(noun, friend, opponent, enemy, adversary) |
| rival(noun, opponent, enemy, attacker, competitor) |
| opposition(noun, associate, opponent, enemy, attacker) |
| belittler(noun, opponent, enemy, adversary, foe) |
| contender(noun, opponent, enemy, attacker, competitor) |
| detractor(noun, attacker, competitor, adversary, defamer) |
| discourager(noun, attacker, competitor, adversary, detractor) |
| backbiter(noun, associate, attacker, competitor, adversary) |
| challenger(noun, opponent, enemy, adversary, foe) |
| contestant(noun, opponent, enemy, adversary, foe) |
| critic(noun, opponent, enemy, adversary, foe) |
| defamer(noun, associate, attacker, competitor, adversary) |
| slanderer(noun, associate, attacker, competitor, adversary) |
| traducer(noun, associate, attacker, competitor, adversary) |