onesie

noun

one·​sie ˈwən-zē How to pronounce onesie (audio)
plural onesies
1
: a bodysuit for an infant having a snap closure at the crotch and not covering the legs
… her husband, Prince William, gratefully accepted a onesie labeled "Daddy's Little Co-Pilot" from a well-wisher …Michelle Tauber et al.
2
: a one-piece garment for adults usually with long sleeves and pants and sometimes with a hood
All eyes were on Pharrell Williams' wife, Helen Lasichanh, during the Met Gala on May 1, but it was for all the wrong reasons. We were hoping Helen would show off her amazing post-baby body after birthing triplets, but instead, she covered her body in a giant red onesie that some Twitter users were comparing to the red Teletubbie!Christopher Rogers

Examples of onesie 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.
Dressed in a red onesie, the infant kicked her legs and attempted to pick up her head in the adorable video taken by her mom. Hannah Sacks, People.com, 11 Mar. 2025 The onesie is a homage to the championship's signature hole. Jack Bantock, CNN, 11 Mar. 2025 In one photo with Hailey, 28, and Jack, the doting dad appeared to make sure the face of his newborn boy, who was swaddled in a lime green onesie, wasn't visible. Russel Honoré, Newsweek, 5 Mar. 2025 The entire procedure took Dr. Jenny and her team about 45 minutes, especially since Luna's intestines were healthy and the onesie hadn't gone too far along. Saman Shafiq, USA TODAY, 28 Feb. 2025 See All Example Sentences for onesie

Word History

Etymology

one entry 1 + -sie (after the trademark Onesies)

First Known Use

1983, in the meaning defined at sense 1

Time Traveler
The first known use of onesie was in 1983

Browse Nearby Words

Cite this Entry

“Onesie.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/onesie. Accessed 21 Mar. 2025.

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