背せ中なかで語かたる

expression, godan verb (-ru)

let one's actions do the talking; lead by example; walk the talk

Idiomatic expression meaning to convey one's thoughts, feelings, or principles through actions rather than words, often implying a quiet, dignified, or stoic approach.

• 彼かれは口くち数かずが少すくないが、背せ中なかで語かたるタイプの上じょう司しだ。

  He's a man of few words, but he's the type of boss who lets his actions do the talking.

• 先せん輩ぱいはいつも背せ中なかで語かたってくれるので、自し然ぜんと尊そん敬けいしてしまう。

  My senior always leads by example, so I naturally come to respect him.