万ばん世せい不ふ易えき

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Meanings

1

noun

eternal and unchanging; everlasting

yojijukugo (four-character idiom)

A formal yojijukugo meaning something that remains unchanged for all eternity. Often used in solemn or literary contexts.

この憲けん法ぽうは万ばん世せい不ふ易えきの真しん理りに基もとづいている。
This constitution is based on eternal and unchanging truths.

万ten thousand, 10,000
世generation, world, society
不negative, non-, bad
易easy, ready to, simple

Similar words

永えい遠えん
永遠 is a common word for 'eternity', while 万世不易 is a formal yojijukugo emphasizing unchanging permanence.
不ふ変へん
不変 means 'unchanging' and is more everyday; 万世不易 adds the nuance of spanning all ages.

Etymology

A yojijukugo composed of 万世 (all generations, eternity) and 不易 (unchanging). The exact historical origin is uncertain, but it follows classical Chinese-derived patterns.