sleepless

adjective
sleep·​less | \ ˈslēp-ləs How to pronounce sleepless (audio) \

Definition of sleepless

1 : not able to sleep lay sleepless with fever
2 : affording no sleep sleepless nights
3 : unceasingly active or operative sleepless casinos

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Other Words from sleepless

sleeplessly adverb
sleeplessness noun

Examples of sleepless in a Sentence

He lay sleepless in bed.

Recent Examples on the Web

Suede slippers from Paris, bespoke facials to erase any and all signs of sleepless nights, and a keepsake bracelet that a mini-me (perhaps that’s you!) will one day inherit. Zoe Ruffner, Vogue, "6 Impossibly Chic Fashion Moms Share Their Dream Mother’s Day Gifts," 9 May 2019 Prescription painkillers were proving ineffective, leaving him sweaty and sleepless. The Economist, "Still not highDrugs policy in Germany is a mess," 1 Feb. 2018 Click to Read Story The Coaches Parents Call When the Baby Won’t Sleep After too many sleepless nights, exhausted moms and dads turn to experts, some of whom even offer overnight stays as part of the consultation. Sue Shellenbarger, WSJ, "Remember, It’s Their College Years, Not Yours," 16 Mar. 2019 The inevitable result: minor headaches, eye strain, and, occasionally, sleepless nights. Marina Liao, Marie Claire, "Do Sleep Glasses Actually Work?," 5 Feb. 2019 If those puffy eyes aren't the result of your baby’s sleepless nights but your own vivid and often violent dreams of your child that make a full-night's rest impossible, take solace: These nightmares could be signs of healthy bonding. Merritt Watts, Glamour, "New Mom Nightmares: The Common Postpartum Symptom Nobody Talks About," 13 Sep. 2018 Including pizza boxes, Ikea receipts, and — in this latest instance — photo evidence of a sleepless night spent tending blownout diapers and a restless baby. Candace Braun Davison, House Beautiful, "Joanna Gaines Reveals Where To Buy Everything In Baby Crew's Nursery," 6 Aug. 2018 According to the study, people in Montana are the first to experience their sleepless night, with that combination of factors peaking on July 5. Weldon B. Johnson, azcentral, "Sleepless in Arizona? It's that time of year," 13 July 2018 The lawyers will argue that the children should be reunified with their parents on the basis of due process and the fact that keeping the children from their families is causing them mental anguish, sleepless nights and PTSD. Kathleen Mcwilliams, courant.com, "Court To Hear Arguments In Case Of Two Children Held In Connecticut Separated From Their Parents At The Border," 11 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sleepless.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sleepless

15th century, in the meaning defined at sense 1

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Statistics for sleepless

Last Updated

17 May 2019

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Time Traveler for sleepless

The first known use of sleepless was in the 15th century

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More Definitions for sleepless

sleepless

adjective

English Language Learners Definition of sleepless

: without sleep
: not able to sleep

sleepless

adjective
sleep·​less | \ ˈslē-pləs How to pronounce sleepless (audio) \

Medical Definition of sleepless

: not able to sleep : insomniac

Other Words from sleepless

sleeplessness noun

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Comments on sleepless

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