賛さん同どう者しゃ

noun

supporter; advocate; proponent

A person who agrees with and supports a cause, idea, or proposal. Often used in formal or organizational contexts.

• 彼かれはその計けい画かくの賛さん同どう者しゃを集あつめている。

  He is gathering supporters for the plan.

• 賛さん同どう者しゃの署しょ名めいが必ひつ要ようです。

  Signatures of supporters are required.