慎しん重ちょう居こ士じ

noun

very cautious person; very prudent person

A yojijukugo describing someone who is extremely careful, circumspect, and risk-averse in their actions or decisions. Often used with a slightly critical or humorous tone.

• 彼かれは慎しん重ちょう居こ士じだから、新あたらしい計けい画かくにはなかなか賛さん成せいしない。

  He's such a cautious person that he rarely agrees to new plans.

• あの慎しん重ちょう居こ士じがそんなリスクを取とるはずがない。

  There's no way that overly prudent person would take such a risk.