Definition, Meaning & Synonyms

fast-asleep

adjective
/fæst əˈsliːp/
Definition
in a deep state of sleep; soundly sleeping.
Examples
  • After the long journey, he was fast asleep on the couch.
  • The baby fell fast asleep after her bedtime story.
Meaning
When someone is fast asleep, they are not easily awakened and are in a peaceful, restful state of sleep.
Synonyms
  • Deeply asleep
  • Sound asleep
  • Asleep