: the practice of sleeping in the same bed or close by in the same room with one's child
Parents should be aware of potential co-sleeping risks, including accidental smothering and children falling off the bed.—Nicky Cohen
Besides making a baby feel safe, co-sleeping extends the quality time that parents can spend with her.—Martin E. P. Seligman
compare bed-sharing
co-sleep intransitive verb
… a mom of two in Atlanta. She loved breastfeeding, she returned to her career in marketing after maternity leave, and she co-slept with her babies for years. —Parenting

Examples of co-sleeping in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Cuddling or co-sleeping with pets is especially likely to trigger allergies. — Jane Sykes, Washington Post, 10 Sep. 2026 Officials said that about 74% of the cases involved co-sleeping, where a parent or guardian shares a bed with their infant. — Bryan Lynn, CBS News, 8 Sep. 2026 Police arrested and charged a 27-year-old Monroe woman in her baby’s death after determining the infant died due to co-sleeping. — Joe Marusak, Charlotte Observer, 15 Aug. 2026 Co-Sleeping With an Infant Is Never Ok Remember never to co-sleep with your infant. — Heather Gowen Walsh, Parents, 13 Aug. 2026 See All Example Sentences for co-sleeping

Word History

First Known Use

1966, in the meaning defined above

Time Traveler
The first known use of co-sleeping was in 1966

Browse Nearby Words

Cite this Entry

“Co-sleeping.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/co-sleeping. Accessed 25 Sep. 2026.

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