1.
lack of sleep; sleep deprivation; not getting enough sleep
The state of having slept less than needed, often resulting in tiredness.
寝不足で頭がぼーっとする。
My head is foggy from lack of sleep.
最近寝不足が続いている。
I've been sleep-deprived lately.
寝不足は健康に良くない。
Lack of sleep is not good for your health.
Compound of 寝 (sleep) + 不足 (insufficiency). Describes the state of not having slept enough. Can function as a noun or na-adjective.
COMMON COLLOCATIONS:
- 寝不足で〜: due to lack of sleep
- 寝不足が続く: lack of sleep continues
- 寝不足を解消する: to catch up on sleep
- 寝不足気味: a bit sleep-deprived
SIMILAR WORDS:
- 睡眠不足: sleep deprivation (more formal/medical)
- 寝不足 is the everyday, conversational term
RELATED SLEEP VOCABULARY:
- 夜更かし: staying up late
- 二度寝: going back to sleep
- 寝坊: oversleeping