旦たん夕せき

noun, adverb

on the brink of; imminent

Literary expression for a critical moment or impending event. Often used in fixed phrases like 旦夕に迫る.

• 危き機きが旦たん夕せきに迫せまっている。

  A crisis is imminent.

noun, adverb

morning and evening; day and night

Classical literary term for 'always' or 'constantly', emphasizing the passage of time from morning to night. Rare in modern Japanese.

• 彼かれは旦たん夕せき努ど力りょくを怠おこたらなかった。

  He never neglected his efforts, day and night.