spokesperson; representative; mouthpiece
A person who speaks on behalf of another person, group, or organization. Can be used in formal, political, or everyday contexts.
He faced the press conference as the company's spokesperson.
This organization acts as a voice for consumers.
代弁者 is a native Japanese word for someone who speaks on another's behalf, often in legal or advocacy contexts, whereas スポークスマン is a loanword used mainly for official or media spokespeople.
Standard modern spelling.
Contains the outdated kanji 辯; rarely used today.
Compound of 代弁 (speaking on behalf of) + 者 (person).