Synonyms for sound asleep

Synonyms for (adj) sound asleep

Synonyms: fast asleep, sound asleep

Definition: sleeping deeply

Usage: lying fast asleep on the sofa; it would be cruel to wake him; he's sound asleep

Similar words: asleep

Definition: in a state of sleep

Usage: were all asleep when the phone rang; fell asleep at the wheel


Visual thesaurus for sound asleep