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sleeping

American  
[slee-ping] / ˈsli pɪŋ /

noun

  1. the condition of being asleep.

adjective

  1. asleep.

  2. of, relating to, or having accommodations for sleeping.

    a sleeping compartment.

  3. used to sleep in or on.

    a sleeping jacket.

  4. used to induce or aid sleep or while asleep.

    sleeping mask.

Other Word Forms

  • unsleeping adjective

Etymology

Origin of sleeping

Middle English word dating back to 1250–1300; sleep, -ing 1, -ing 2

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.