深しん更こう

noun

middle of the night; dead of night; midnight

Literary or formal word for the deep, quiet hours of the night. Not used in everyday conversation; more common in written descriptions or poetic contexts.

• 深しん更こうの静しずけさに包つつまれた街まちを歩あるいた。

  I walked through the town wrapped in the stillness of the dead of night.

• 深しん更こうまで仕し事ごとを続つづけるのは体からだに良よくない。

  Working until the middle of the night is not good for your health.