| disapprover(noun, opponent, enemy, attacker, critic) |
| discusser |
| disparager(noun, opponent, enemy, attacker, critic) |
| doubter(noun, opponent, enemy, attacker, critic) |
| faultfinder(noun, opponent, enemy, attacker, critic) |
| fretter(noun, opponent, enemy, attacker, critic) |
| hypercritic(noun, opponent, enemy, attacker, critic) |
| maligner(noun, opponent, enemy, attacker, critic) |
| muckraker(noun, opponent, enemy, attacker, critic) |
| mud-slinger(noun, opponent, enemy, attacker, critic) |
| nagger(noun, opponent, enemy, attacker, critic) |
| nit-picker(noun, opponent, enemy, attacker, critic) |
| panner(noun, opponent, enemy, attacker, critic) |
| quarreller |
| quibbler(noun, opponent, enemy, attacker, critic) |
| reviler(noun, opponent, enemy, attacker, critic) |
| scolder(noun, opponent, enemy, attacker, critic) |
| sidewalk superintendent(noun, expression, opponent, enemy, attacker) |
| slanderer(noun, opponent, enemy, attacker, critic) |
| squabbler |