ぐっすり

ぐっすり
adverb
soundly, deeply (asleep)
descriptive
1. soundly, deeply, fast asleep
Describes sleeping very deeply and peacefully.
I slept soundly last night.
The baby is fast asleep.
I was tired and slept deeply.
I was able to sleep soundly in the quiet room.
After exercising, I always sleep soundly. I don't wake up even once until morning.

ぐっすり is an onomatopoeic adverb for deep sleep.

Common patterns

Similar words

Note: This is a mimetic word (擬態語(ぎたいご)) expressing a state rather than a sound.