Translation guide
A person or thing that responds, especially in technical or emergency contexts. This guide covers how to express 'responder' in Japanese, focusing on natural equivalents for first responders, technical devices, and general respondents.
A person who responds to emergencies, such as a paramedic, firefighter, or police officer.
Refers specifically to emergency medical personnel, like paramedics or ambulance crews. This is the most common term for a medical first responder.
救急隊員がすぐに到着した。
The emergency responders arrived quickly.
Firefighter. Often one of the first responders to fires, accidents, and disasters. Use this when the responder is specifically a firefighter.
消防士が火事に対応した。
The firefighters responded to the fire.
Police officer. A first responder in law enforcement situations. Use when the responder is a police officer.
警察官が通報に応答した。
The police officer responded to the call.
Literally 'initial response person'. A broader term for any first responder, including emergency services and sometimes security personnel. More formal and used in official contexts.
初動対応者が現場に急行した。
The first responders rushed to the scene.
Direct loanword from English. Used in some technical or specialized contexts, but not common in everyday Japanese. Might be understood in IT or emergency management fields.
ファーストレスポンダーの訓練を受ける。
Receive training as a first responder.
A device or system that responds to signals or requests, such as in telecommunications or computing.
General term for a responding device or apparatus. Used in technical contexts like transponders or answering machines.
この応答装置は信号を受信すると自動で返信する。
This responder device automatically replies when it receives a signal.
Transponder. A specific type of responder device used in aviation, communications, and satellite systems. Commonly used in technical fields.
航空機のトランスポンダが位置情報を送信する。
The aircraft's transponder transmits location information.
Loanword used in some IT or engineering contexts, but less common than トランスポンダ or 応答装置. Might appear in software or network terminology.
サーバーがクライアントのリクエストにレスポンダとして応答する。
The server responds as a responder to the client's request.
A person who answers or replies, such as in a survey, discussion, or correspondence.
Respondent, especially in surveys, questionnaires, or formal inquiries. The most natural term for someone who provides answers.
アンケートの回答者の大半が満足と答えた。
The majority of survey respondents answered that they were satisfied.
A person who replies, especially to messages, emails, or letters. Focuses on the act of replying rather than answering a question.
メールの返信者が少なかった。
There were few responders to the email.
Literally 'person who responded'. A flexible phrase that can be used in various contexts when a specific noun is not needed.
呼びかけに応答した人はいなかった。
There was no one who responded to the call.
Choose the term based on context. For emergency personnel, use specific roles like 救急隊員, 消防士, or 警察官. For devices, 応答装置 or トランスポンダ are appropriate. For survey respondents, 回答者 is best. Avoid using レスポンダー in general conversation; it sounds unnatural.
救急隊員はレスポンダーと呼ばれることもあるが、一般的ではない。
Emergency medical personnel are sometimes called 'responders', but it's not common.
Directly translating 'responder' as レスポンダー is often unnatural. Japanese prefers specific terms based on the role or context. Only use レスポンダー in technical fields where it is established jargon.