端たん倪げいすべからざる

expression, noun-modifying (irregular)

inscrutable; unfathomable; unpredictable

Literary, formal phrase meaning something is beyond comprehension or impossible to measure or predict. Often used to describe profound or mysterious things. The phrase is a fixed expression derived from classical Chinese.

See also: 端倪

• 彼かれの才さい能のうは端たん倪げいすべからざるものがある。

  His talent is truly unfathomable.

• 自し然ぜんの力ちからは端たん倪げいすべからざるものだ。

  The power of nature is inscrutable.