one·​sie | \ ˈwən-zē How to pronounce onesie (audio) \
plural onesies

Definition of onesie

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

The Try Guys are playing Jenga Truth or Dare, dressed in animal onesies and having a great time for their 6 million YouTube fans. Abby Ohlheiser, Washington Post, "Why so many of your favorite YouTube videos are secretly infomercials," 23 Aug. 2019 The gift shop on the road has yet to open its doors to sell baby onesies and lapel pins engraved with Henry David Thoreau quotes. Bina Venkataraman,, "‘The forest is not safe’: How Lyme disease struck fear into the heart of this nature lover," 22 Aug. 2019 In January, Mother Jones discovered a video of O’Rourke, from 2003, wearing a fitted white onesie and a sheep mask and playing rhythm guitar in a punk-rock cover band called the Sheeps. Amanda Petrusich, The New Yorker, "The Nostalgia in Beto O’Rourke’s Indie-Rock Videos," 20 June 2019 In a photo posted to the singer’s Instagram Wednesday, four-month-old Adeya looks cool and collected in a tie-dye onesie and matching head wrap. Jennifer Ford, Essence, "Kehlani's Daughter Looks Adorable In Her Head Wrap," 1 Aug. 2019 Taylor Swift Mayfield is the one dancing in a rainbow onesie in front of Taylor’s trailer. Constance Grady, Vox, "An annotated guide to Taylor Swift’s star-studded “You Need to Calm Down” video," 17 June 2019 The girl said border authorities made her throw away a backpack with the baby's clothing and hadn't given her anything else, so the baby was in a dirty onesie bundled in a sweatshirt that another migrant mother gave her. NBC News, "Premature baby found in Border Patrol facility in Texas," 14 June 2019 Holidays are a big deal in Miley's home: St. Patrick's Day had her dancing around in a green Care Bears onesie among party decor including a leprechaun, a rainbow and a pot of gold. Ashley Iasimone, Billboard, "Miley Cyrus Goes Pinup-Girl Glam, Gets Spanked by the Easter Bunny in Whimsical Easter Videos," 1 Apr. 2018 The batch of rodents onesies includes a mermaid, a unicorn, a shark, a superhero, a pineapple and more. Kelli Bender,, "PetSmart Just Revealed an Unbelievably Adorable Line of Guinea Pig Halloween Costumes," 21 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'onesie.' 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 onesie

1983, in the meaning defined at sense 1

History and Etymology for onesie

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

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Statistics for onesie

Last Updated

2 Oct 2019

Look-up Popularity

Time Traveler for onesie

The first known use of onesie was in 1983

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Comments on onesie

What made you want to look up onesie? Please tell us where you read or heard it (including the quote, if possible).


to wander slowly or to speak indistinctly

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