1.
sleeping very deeply; dead sleep; sleeping like a log
Colloquial term for falling into an extremely deep sleep, often to the point of being difficult to wake. The character for "explosion" conveys the intensity.
昨日は爆睡した。
I slept like a log yesterday.
電車の中で爆睡してしまった。
I fell sound asleep on the train.
疲れすぎて帰宅した途端に爆睡して、朝まで起きなかった。
I was so exhausted that I crashed the moment I got home and didn't wake up until morning.
USAGE:
爆睡 is a colloquial, casual word popular especially among younger speakers. The 爆 (explosion) prefix intensifies the meaning, similar to how 爆笑 means "roaring laughter."
COMMON COLLOCATIONS:
- 爆睡する (to sleep like a log)
- 爆睡してしまう (to end up in a dead sleep)
- 爆睡中 (in a deep sleep)
REGISTER:
This is an informal, spoken word. In formal writing, use 熟睡 (sound sleep) instead.