Translation guide
A person who makes a formal complaint, especially in legal or official contexts.
The person who brings a case or accusation in a legal setting.
Standard legal term for plaintiff in a civil lawsuit.
Someone who raises an issue or grievance in an official capacity, such as to a company or organization.
General phrase meaning 'person who filed a complaint'. Natural in customer service or administrative contexts.
苦情を申し立てた人に謝罪した。
We apologized to the complainant.
There is no single Japanese word that covers all uses of 'complainant'. Choose based on context: legal vs. general complaint.
原告 is for civil cases (plaintiff), while 告訴人 is for criminal cases (complainant who files charges). Do not mix them up.
原告は損害賠償を求めた。
The complainant sought damages.
The person who files a criminal complaint or accusation.
告訴人が警察に被害届を出した。
The complainant filed a report with the police.
Used for a person who files a petition or motion, often in family or administrative law.
申立人は調停を申し立てた。
The complainant filed for mediation.
A person who reports a crime to authorities, often used in criminal procedure.
告発人の証言が重要だった。
The complainant's testimony was crucial.
Formal term for a person who makes a request or complaint, often in official procedures.
申出人の意向を確認します。
We will confirm the complainant's intentions.
Casual way to refer to someone who made a complaint, often in business contexts.
クレームを入れた人に返金した。
We refunded the complainant.