| bidder(noun, law, declaration, application) |
| blamer(noun, opponent, enemy, attacker, critic) |
| caller(noun, law, declaration, application) |
| declarant(noun, law, declaration, application) |
| deponent(noun, law, person, application) |
| filer(noun, law, declaration, application) |
| indictor(noun, person, complaint, accusation) |
| informant(noun, law, person, application) |
| kvetch(noun, person, discontent, complaint) |
| malcontent(adjective, person, discontent, complaint) |
| proposer(noun, law, declaration, application) |
| qualifier(noun, law, declaration, application) |
| relator(noun, law, declaration, application) |
| whistleblower(noun, law, declaration, application) |
| yammerer(noun, law, person, accusation) |
| worrier(noun, opponent, enemy, attacker, critic) |
| allegator(noun, law, person, application) |
| bellyacher(noun, person, complaint, delation) |
| crab(noun, person, complaint, delation) |
| croaker(noun, person, complaint, delation) |