Word寝不足ねぶそくnebusokuMeaninglack of sleepPart of speechnounPronunciationCourseHardcore JapaneseLessonLesson 58Usages of nebusoku寝不足ねぶそく の せい で 朝あさ から 頭痛ずつう が して、 食欲しょくよく も あまり なかった。nebusoku no sei de asa kara zutsuu ga shite, shokuyoku mo amari nakatta.Because of lack of sleep, I had a headache since morning and did not have much appetite either.