| rival(noun, opponent, adversary, foe, hostile) |
| adversary(noun, opponent, foe, hostile, antagonist) |
| antagonist(noun, opponent, adversary, foe, hostile) |
| enemy(noun, opponent, hostile, adversary, foe) |
| foe(noun, opponent, adversary, hostile, antagonist) |
| opponent(noun, adversary, foe, hostile, antagonist) |
| competitor(noun, opponent, adversary, foe, person) |
| bad person(noun, expression, hostile, rival, opponent) |
| bandit(noun, opponent, adversary, foe, person) |
| contender(noun, opponent, adversary, foe, person) |
| detractor(noun, hostile, rival, opponent, competitor) |
| outsider(noun, person, opponent) |
| archenemy(noun, opponent, person, rival, competitor) |
| opposer(noun, hostile, opponent, adversary, foe) |
| opposite number(noun, expression, hostile, opponent, adversary) |
| backbiter(noun, rival, opponent, competitor, adversary) |
| betrayer(noun, rival, opponent, competitor, adversary) |
| match(noun, hostile, opponent, adversary, foe) |
| traitor(noun, rival, opponent, competitor, adversary) |
| fifth column(noun, expression, rival, opponent, competitor) |