mışıl mışıl uyuyan

listen to the pronunciation of mışıl mışıl uyuyan
Türkisch - Englisch
sound asleep
Sleeping still and silently

When Frere had come down, an hour before, the prisoners were all snugly between their blankets. They were not so now; though, at the first clink of the bolts, they would be back again in their old positions, to all appearances sound asleep.

sleeping deeply; "lying fast asleep on the sofa"; "it would be cruel to wake him; he's sound asleep"