dead sleep

The term "dead sleep" is often used to describe a very deep or particularly sound sleep.

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Definition

B2General

(informal)A state of deep, uninterrupted sleep that is hard to wake from.

Example

  • After the long hike, he fell into a dead sleep and didn't wake up until morning.

C1Sleep Patterns

(technical, academic)The first phase of sleep in a biphasic sleep pattern, typically occurring early in the night.

Example

  • In historical biphasic sleep patterns, the dead sleep was followed by a period of wakefulness before the second sleep.

Similar

Terms that have similar or relatively close meanings to "dead sleep":

deep sleepeternal sleepdead to the worldsleep onsleep of the justliving deadfat sleepersleeping powerfall asleepsleep insleeping languageput to sleepdead and burieddead waterdead handdead stickdead standsleep flowerslept onsleepy sandplay deaddead grounddead meatdead in the watersleep withdead calmsnooze offbeauty sleep