: the natural, easily reversible periodic state of many living things that is marked by the absence of wakefulness and by the loss of consciousness of one's surroundings, is accompanied by a typical body posture (such as lying down with the eyes closed), the occurrence of dreaming, and changes in brain activity and physiological functioning, is made up of cycles of non-REM sleep and REM sleep, and is usually considered essential to the restoration and recovery of vital bodily and mental functions
Noun I just need to get some sleep. How much sleep did you get last night? Her roommate talks in her sleep. The noise woke her from a deep sleep. He woke up and rubbed the sleep out of his eyes. Verb I couldn't sleep last night. I was awake all night long. I usually try to sleep for at least eight hours every night. Did you sleep soundly last night? We were sleeping peacefully when a sudden loud noise woke us up. I can never sleep on airplanes. The tent sleeps five adults. See More
Recent Examples on the Web
Noun
Standley died in her sleep on Jan. 30 of this year, Williams said, five days after her 35th birthday. Shanzeh Ahmad, Chicago Tribune, 13 Sep. 2022 Buckingham Palace announced later that day that its longest-serving monarch had passed away peacefully in her sleep. Lindsay Kornick, Fox News, 9 Sep. 2022 Elizabeth assumed the throne in 1952 at the age of 25 after the sudden death of her father in his sleep at 56. Rachel Elbaum, NBC News, 8 Sep. 2022 King George VI died in his sleep at the Sandringham estate, in Norfolk, as Elizabeth, his eldest daughter, was more than four thousand miles away, on a safari holiday in Kenya. Rebecca Mead, The New Yorker, 8 Sep. 2022 Then in February 1952, George VI died in his sleep at age 56 after years of ill health. Jill Lawless, ajc, 8 Sep. 2022 Then in February 1952, George VI died in his sleep at age 56 after years of ill health. Danica Kirka, BostonGlobe.com, 8 Sep. 2022 The result is cooler sleep, pressure relief and great durability. Paris Wolfe, cleveland, 23 Aug. 2022 The other thing that really struck me again is sleep. James Brown, USA TODAY, 15 Aug. 2022
Verb
In addition to diet and sleep routine changes, Underwood has also added more movement to her routine. Elizabeth Ayoola, Essence, 14 Sep. 2022 Glade's Plug-in Plus saves energy and extends the life of its fragrance with its unique rest or sleep cycle. Jamie Kim, Good Housekeeping, 13 Sep. 2022 Promoters envision a different experience — a relaxed ride with a meal and sleep before arriving bright-eyed at the destination. David Sharp, BostonGlobe.com, 10 Sep. 2022 After all, social media is best used as a showcase of Instagrammable baby showers and picture-perfect nurseries rather than spit-up, sleep deprivation and paranoia. Rebecca Rubin, Variety, 9 Sep. 2022 There’s now no shortage of guidance for raising children through early developmental milestones, from toilet training and getting your kid to sleep through the night to steering them through the turbulence of adolescence. Julie Halpert, The Atlantic, 6 Sep. 2022 So, sleep well, remember that creepy looking spiders probably won’t hurt you, and don’t shoot the messenger. Dennis Pillion | Dpillion@al.com, al, 5 Sep. 2022 The new Esencia Mansion spans a jaw-dropping 12,000 square feet and comes with four suites to sleep up to eight of your crew. Demetrius Simms, Robb Report, 29 Aug. 2022 The Fitbit app combines this data along with information about your activity and sleep to calculate a stress management score, so users can follow trends over time. Mario Aguilar, STAT, 27 Aug. 2022 See More
Word History
Etymology
Noun
Middle English slepe, from Old English slǣp; akin to Old High German slāf sleep and perhaps to Latin labi to slip, slide
First Known Use
Noun
before the 12th century, in the meaning defined at sense 1