sleep-in
Americanadjective
noun
verb
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to sleep longer than usual
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to sleep at the place of one's employment
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Sleep at one's place of employment, as in They have a butler and maid who both sleep in . [First half of 1800s]
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Sleep late, either accidentally or deliberately. For example, I slept in and missed my usual train , or On weekends we like to sleep in . [Late 1800s]
Etymology
Origin of sleep-in
First recorded in 1950–55; adj., noun use of verb phrase sleep in
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“Instead of spending $40 each and getting bedbugs, it’s better to sleep in the car,” Georgiou said.
From Los Angeles Times • May 12, 2026
The NHS advises to "always place your baby on their back to sleep" in their own sleep space, like a cot, for the first 12 months to reduce the risk of Sids.
From BBC • May 5, 2026
One of the main methods suggested by health authorities to improve sleep in infants is something called sleep training.
From Slate • May 3, 2026
After which he addresses the moon, asking it to “shine in my yard, / let the grass blades / cast shadows on themselves. / Harbinger of dreams, let me sleep in your / eternal glow.”
From The Wall Street Journal • Apr. 16, 2026
It was safe there, but far too unstable to sleep in.
From "A Girl Named Disaster" by Nancy Farmer
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.