Word寝不足ねぶそくListenYour browser has no Japanese voice, so Listen is not available.How to add a Japanese voiceCommonMeaningsNa-adjective · Nounlack of sleep; insufficient sleepKanji in this word寝不足Dictionary data: JMdict and KANJIDIC2, property of the EDRDG, used under its licence (CC BY-SA 4.0).(opens in a new tab)