熟睡
Common
Noun
Irregular
Intransitive
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb
deep sleep;sound sleep;profound sleep
彼女が熟睡しているのを確かめて、彼はこっそり部屋を抜け出して行った。
After making sure she was sound asleep, he crept out of the room and set off.