Dictionary / Vocabulary / 寝不足
ねぶそく
lack of sleep; insufficient sleep
common word
心配や寝不足で彼女は最近10ポンド近くも痩せてしまった。
Recently what with anxiety and lack of sleep, she has lost almost ten pounds.
寝不足は体に悪い。
Want of sleep injures our health.
寝不足の影響がではじめた。
Lack of sleep began to tell on me.