adjective
sleeping deeply
-
lying fast asleep on the sofa
-
it would be cruel to wake him; he's sound asleep
• Syn: ↑fast asleep
• Similar to: ↑asleep
* * *
sound asleep phrase
sleeping very well
The children were all sound asleep by 8 o’clock.
Thesaurus: asleep and unconscioussynonym
Main entry: sound
Useful english dictionary. 2012.