| delator(noun, law, person, accusation) |
| griper(noun, person, complaint, delation) |
| grouch(noun, person, complaint, grunt) |
| growler(noun, person, complaint, grunt) |
| grumbler(noun, person, complaint, grunt) |
| impeacher(noun, person, complaint, accusation) |
| nagger(noun, opponent, enemy, attacker, critic) |
| panner(noun, opponent, enemy, attacker, critic) |
| querulous person(expression, person, complaint, grunt) |
| quibbler(noun, opponent, enemy, attacker, critic) |
| reviler(noun, opponent, enemy, attacker, critic) |
| scolder(noun, opponent, enemy, attacker, critic) |
| slanderer(noun, opponent, enemy, attacker, critic) |
| vilifier(noun, opponent, enemy, attacker, critic) |
| whiner(noun, person, complaint, grunt) |
| zapper(noun, opponent, enemy, attacker, critic) |
| faultfinder(noun, opponent, enemy, attacker, critic) |
| criticizer(noun, opponent, enemy, attacker, critic) |
| decrier(noun, opponent, enemy, censor, detractor) |
| detractor(noun, opponent, enemy, attacker, censor) |