線せんの太ふとい

expression, i-adjective

strong-nerved; decisive; bold

Describes a person who is unshakable, confident, and not easily swayed by pressure. Often used to praise someone's mental strength or assertiveness.

• 彼かれは線せんの太ふとい人ひとだから、どんな困こん難なんにも動どうじない。

  He's a strong-nerved person, so he won't be fazed by any difficulty.

• 交こう渉しょうでは線せんの太ふとい態たい度どが求もとめられる。

  A decisive attitude is required in negotiations.