| opponent(noun, support, person, resist, rival) |
| antagonist(noun, support, person, resist, opposition) |
| adversary(noun, support, person, resist, opposition) |
| resister(noun, support, person, resist, opponent) |
| disputant(noun, match, opposition, rival, opponent) |
| enemy(noun, match, opposition, rival, opponent) |
| foe(noun, opposition, rival, opponent, enemy) |
| opposite(noun, opponent) |
| oppositionist(noun, support, person, resist, opponent) |
| competitor(noun, opposition, rival, opponent, enemy) |
| contestant(noun, match, opposition, rival, opponent) |
| obstructionist |
| rival(noun, match, opposition, opponent, enemy) |
| archenemy(noun, opponent) |
| anti(noun, match, opposition, rival, opponent) |
| assailant(noun, match, opposition, rival, opponent) |
| attacker(noun, rival, opponent) |
| con(noun, match, opposition, rival, opponent) |
| denier |
| dissentient(noun, match, opposition, rival, opponent) |