不眠不休

Meanings

1. Noun, No-adjective

   no sleep or rest; working day and nightFour-character idiom

• 父ちちは不眠不休ふみんふきゅうで働はたらいた。

  My father worked hard night and day.

• 彼かれは不眠不休ふみんふきゅうでその作品さくひんを仕上しあげた。

  He finished his work without sleep or rest.