fast asleep

This page is about the collocation fast asleep

collocation pattern: adverb + adjective


sleeping deeply, or in a deep sleep

For example

  • The kids are fast asleep, so they won't wake up.

  • Are you sure they're fast asleep, or are they just pretending?

Also "sound asleep"

Quick Quiz

If you're fast asleep, you

a. won't wake up easily

b. went to sleep quickly

c. are breathing quickly

Contributor: Matt Errey