Skip to main content
sleep

sleep

26 1.0
A long time of being not active like hibernation or death
  • noun
  • /sliːp/
: letargo
  • It was in his sleep, peaceful, with no suffering, but it made philosophers of all of us.
  • eternal sleep

Oh, what made Fatua sunbeams toil to break Earth's sleep at all?

Autoplay Next

Examples

  • At this stage, his wife must be turning in her sleep, tossed between insults and exhaustion.

    Fiction book (1990)
  • The bear enters a state of sleep during the winter months to conserve energy.

  • You woke the bear from his sleep.

  • Never lose any sleep over accusations.

  • But most of us assume that sleep evolved.

  • Go back to sleep, there's no need to feel blue.

  • I've never seen anyone frown so much in their sleep.

  • During hibernation, the groundhog goes into a deep sleep until spring.

  • In literature, some characters appear to be in a permanent sleep as a metaphor for death.

Synonyms

sleeping
vssleep
276 1.0

A time when you are not awake

is the base noun form used to label that condition
slumber
vssleep
76 3.9

A period when something is asleep or inactive

covers that rest but also wider inactivity or figurative stillness
to nap
vssleep
50 1.0

To sleep for a short time during the day

refers to any rest or inactivity, not only short daytime rests
deep sleep
vssleep
25 2.8

A heavy sleep when the body and mind rest and are not aware of surroundings

refers to rest broadly, not only the deepest restorative stage
shut-eye
vssleep
  • Informal
16 7.2

A short sleep taken to rest, often at night

is the neutral, wider term not marked as informal
deep slumber
vssleep
2 4.0

A very heavy sleep that is hard to wake from

is general rest rather than this very deep hard to wake state
doze
vssleep
2 2.8

A short light sleep often taken without meaning to

is the general term for rest, not only brief or accidental ones
hibernation
vssleep
1 4.1

A period when a person or group stops usual activity to rest and save energy

is broader, used for ordinary rest and figurative nonactivity too

Antonyms

232 1.1

A state of being busy and moving

10 2.9

A state of being watchful and ready to notice and act on danger or problems

Idioms

in your sleep
  • Informal
29 2.7

Very easily, almost without thinking

sleep tight
  • Informal
25 3.4

To wish someone a good night's sleep

22 6.1

To feel no guilt about what you did

to sleep a wink
  • Informal
11 5.7

To get any sleep, usually said when someone did not sleep

Stay half awake and watch for danger while you sleep because you are afraid

6 9.9

To be killed and thrown into water by criminals, often said as a joke

To die peacefully, people say this as a gentle way to talk about someone's death

Accept a belief or excuse that makes someone feel better, even if it is not true

1 5.0

Not sleep at all during the night

Delay making a decision until after you think about it overnight

in one's sleep
  • Informal
1 3.9

Very easy to do without thinking

Compounds

A night of sleep that makes you feel rested and ready for the day

sleep deprivation
  • Offensive
28 5.3

Keeping someone awake on purpose to hurt or control them

25 2.8

A heavy sleep when the body and mind rest and are not aware of surroundings

sleep apnea
  • Specialized
17 4.1

Breathing stops for short times during sleep, causing poor sleep and health risks

17 3.4

A sleep thought to make you look more rested and healthy

sleep disorder
  • Specialized
16 3.5

A health problem that stops a person sleeping normally

REM sleep
  • Specialized
13 4.1

A stage of sleep with fast eye movement, clear dreams, and high brain activity

eternal sleep
  • Literature
2 8.2

A gentle way to talk about death as a peaceful, long sleep

1 3.7

A short, shallow sleep you wake up easily from

Saying words out loud while you are not awake and without knowing it

1 3.7

A sleep stage when the eyes move quickly and most dreaming happens

twilight sleep
  • Archaic
1 9.9

A state when medicine makes a person partly awake during childbirth

sleep of the just
  • Literature
1 8.4

A deep peaceful rest after living a good life

sleep-learning
  • Specialized
1 8.6

A way of learning things while you sleep by listening to recordings

NREM sleep
  • Specialized
1 4.4

A stage of sleep without fast eye movements when you usually do not dream

1 5.6

An organized event where people stay overnight to protest and ask for change

deep sleep
  • Specialized
1 3.7

A low power state when a device turns off most parts but can wake quickly

paradoxical sleep
  • Specialized
1 6.3

A part of sleep when the eyes move quickly and dreams feel real

1 3.7

A part of sleep without fast eye movements or dreams when the body repairs itself

orthodox sleep
  • Archaic
7.4

A stage of sleep without quick eye movements or dreaming when the body repairs itself

sleep dep
  • Informal
9.7

A state of not having enough sleep that makes you very tired

sleep divorce
  • Literature
7.5

A plan where a couple sleeps in separate beds or rooms because they have different sleep habits

sleep terror disorder
  • Specialized
9.2

A sleep problem where someone wakes from deep sleep with intense fear and often screams, usually without memory

How Inactive

hibernation
1 4.1
sleep
26 1.0
dormancy
3 6.2
torpor
3 8.9

Surface Forms

sleep singular
sleeps plural

Etymology

Sleep also came to mean a very deep or long rest and comes from the same old word slǣp for quiet rest. That's why people call hibernation or peaceful death 'sleep'—it feels like a long, calm rest.