| depreciator(noun, critic, reluctancy, knocker, blip) |
| detractor(noun, opponent, enemy, attacker, critic) |
| knocker(noun, opponent, enemy, critic, censor) |
| belittler(noun, opponent, enemy, attacker, critic) |
| critic(noun, opponent, enemy, attacker, censor) |
| decrier(noun, opponent, enemy, critic, censor) |
| defamer(noun, opponent, enemy, attacker, critic) |
| derogator(noun, critic) |
| censurer(noun, opponent, enemy, attacker, critic) |
| cynic(noun, critic, pessimist, skeptic) |
| muckraker(noun, opponent, enemy, attacker, critic) |
| slanderer(noun, opponent, enemy, attacker, critic) |
| vilifier(noun, opponent, enemy, attacker, critic) |
| backbiter |
| calumniator |
| criticizer(noun, opponent, enemy, attacker, critic) |
| abuser |
| aristarch(noun, opponent, enemy, attacker, critic) |
| attacker(noun, opponent, enemy, critic, defamer) |
| backseat driver(noun, expression, opponent, enemy, attacker) |