寝ねる間まも惜おしんで

expression, adverb

without sparing time for sleep; sacrificing sleep

Fixed adverbial phrase used when someone works or does something so intently that they begrudge even the time for sleeping.

• 彼かれは寝ねる間まも惜おしんで勉べん強きょうした。

  He studied without sparing time for sleep.

• 寝ねる間まも惜おしんで働はたらいた結けっ果か、体からだを壊こわしてしまった。

  As a result of working without sparing time for sleep, he ruined his health.