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to fall asleep

to fall asleep

376 1.0
To start sleeping
  • phrasal verb
  • /fɔl əˈslip/
translation icon : dormirse
  • After a long day, I like to read a book until I fall asleep.
  • fall asleep at night
  • difficulty falling asleep
  • trouble falling asleep

Did that make that process just before you fall asleep quite unpleasant?

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Examples

  • Dad collapses into bed and falls asleep immediately, a skill he developed as a soldier.

    Academic text (2011)
  • OK, who is most likely to fall asleep first?

  • Can you just hold me until I fall asleep, please?

  • When they find it difficult to fall asleep, they get up and walk around in the dark.

    Academic text (2003)
  • You fell asleep on my shoulder.

  • That's one way to fall asleep.

  • When some children can't fall asleep, they count sheep.

  • I don't want to fall asleep because I'll miss you, babe.

  • She always listens to calming music to help her fall asleep at night.

  • When I feel tired, I often fall asleep within minutes of lying down.

Synonyms

to go to sleep
vsto fall asleep
369 1.0

To stop being awake and rest with your eyes closed

is the general start of sleeping after being awake rather than preparing to rest
to doze
vsto fall asleep
43 2.3

To sleep lightly for a short time without meaning to

is about beginning sleep in any form, not only light or brief rest
to doze off
vsto fall asleep
  • Informal
35 2.7

To fall asleep for a short time without meaning to

means starting sleep in general rather than brief, accidental naps
to drift off
vsto fall asleep
23 3.8

To slowly fall asleep without meaning to

is the plain start of sleeping, not necessarily gradual or unintended
to slumber
vsto fall asleep
15 3.8

To sleep lightly or peacefully

is the event of starting sleep rather than the peaceful character of it
to nod off
vsto fall asleep
  • Informal
12 4.1

To fall asleep for a short time without meaning to

is the basic act of beginning sleep rather than a short accidental nap
to hit the sack
vsto fall asleep
  • Informal
10 6.0

To go to bed to sleep

focuses on starting sleep itself rather than the routine of going to bed
to drop off
vsto fall asleep
  • Informal
5 3.0

To fall asleep for a short time, often without meaning to

is the ordinary beginning of sleep rather than a quick, accidental nod
to hit the pillow
vsto fall asleep
  • Informal
4 3.7

To go to bed and fall asleep quickly because you are tired

describes the simple start of sleeping without implying speed
to nod out
vsto fall asleep
  • Informal
2 7.9

To fall asleep by accident because you are very tired

is a simple start of sleeping and does not require exhaustion
to drowse
vsto fall asleep
2 6.1

To be half asleep for a short time

focuses on the start of sleeping rather than the quality of light rest
to flake out
vsto fall asleep
  • Informal
1 7.6

To fall asleep suddenly because you are very tired

describes the standard start of sleeping without the sense of collapse
to fall in the sack
vsto fall asleep
  • Informal
8.8

To go to bed or sleep

is the neutral description of starting sleep without informal tone
to drowse off
vsto fall asleep
5.5

To begin to fall asleep without meaning to

is the neutral start of sleeping rather than a gradual, unintended shift

Antonyms

1.0

To stop sleeping or make someone else stop sleeping

24 3.0

To stop someone from sleeping by making them stay awake

How Sleepy

to fall asleep
376 1.0
to doze off
  • Informal
35 2.7
to drift off
23 3.8

Surface Forms

fall asleep infinitive
falling asleep present participle
falls asleep third person singular
fallen asleep past participle

Morphology

fall + asleep

The meaning is directly compositional: 'fall' (to go into) combined with 'asleep' (in a state of sleep) yields 'become asleep/enter a sleep state', so learners who know both words can infer the sense. The pattern verb + state adjective meaning 'become X' is common cross-linguistically and the metaphorical extension to devices ('enter a low-power sleep state') remains transparent.

Etymology

Fall asleep uses fall as a picture: you 'drop' into the state of asleep, like your body sinking into a soft bed. That's why it means 'to begin to sleep'.