一いち諾だく千せん金きん

expression

a promise is worth a thousand gold pieces; a promise must be kept at all costs

A yojijukugo emphasizing the absolute weight of one's word; used in formal or literary contexts to stress that a promise should never be broken.

• 彼かれは一いち諾だく千せん金きんの精せい神しんで、どんな小ちいさな約やく束そくも必かならず守まもる。

  With the spirit of 'a promise worth a thousand gold,' he always keeps even the smallest promises.

• 一いち諾だく千せん金きんという言こと葉ばがあるように、一いち度どした約やく束そくは何なにがあっても果はたすべきだ。

  As the saying goes, 'a promise is worth a thousand gold pieces,' so once you make a promise, you should keep it no matter what.