千せん古こ不ふ易えき

noun

eternally unchanging; immutable for all ages

A yojijukugo meaning something that remains unchanged throughout eternity. Often used in formal or literary contexts to describe timeless truths, principles, or natural laws.

• この自し然ぜんの法ほう則そくは千せん古こ不ふ易えきである。

  This law of nature is eternally unchanging.

• 彼かれの言こと葉ばには千せん古こ不ふ易えきの真しん理りが込こめられている。

  His words contain an immutable truth for all ages.