sleeping
Americannoun
adjective
-
of, relating to, or having accommodations for sleeping.
a sleeping compartment.
-
used to sleep in or on.
a sleeping jacket.
-
used to induce or aid sleep or while asleep.
sleeping mask.
Other Word Forms
Derived Forms
Etymology
Origin of sleeping
Middle English word dating back to 1250–1300; see origin at sleep, -ing 1, -ing 2
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.
Both types of mice were exposed either to normal sleeping conditions with room air or to conditions designed to mimic sleep apnea.
From Science Daily • Jun. 9, 2026
As a kid I had a lot of trouble sleeping.
From Los Angeles Times • Jun. 9, 2026
England forward Lauren Hemp said sleeping on Friday evening was "very hard" as they came to terms with their disappointing performance.
From BBC • Jun. 8, 2026
The court heard the men resorted to a "secret rota" of sleeping in shifts and eating animals from the vessel's catch in order to survive.
From BBC • Jun. 8, 2026
With a glance at the sleeping Annad, he hurried to light the lamp.
From "Rowan of Rin" by Emily Rodda
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.
