noun

onesie

WUHN-zee

Onesie (noun) means a one-piece garment, especially a snap-up outfit for a baby worn over a diaper. Example: “They dressed the newborn in a soft cotton onesie.”

noun

A one-piece garment, especially a snap-up outfit for a baby worn over a diaper.

"They dressed the newborn in a soft cotton onesie."

A one-piece loungewear suit or costume worn by adults or teenagers, often for comfort or fun.

"She wore a fleece onesie to the pajama party."

How to use onesie

Learner’s notes

In plain EnglishA one-piece outfit — either baby wear or a cozy adult loungewear suit.

Common pairings

baby onesie fleece onesie

Word forms

onesies plural

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They dressed the newborn in a soft cotton _____.

Etymology

Originally a trademarked name (Onesies) from the Gerber Childrenswear brand, which became a generic term over time.

Rhymes for onesie

pie die lie tie sie vie hie i.e. brie movie eerie moxie

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Frequently asked questions

What does “onesie” mean?

The word “onesie” means a one-piece garment, especially a snap-up outfit for a baby worn over a diaper. In plain terms, a one-piece outfit — either baby wear or a cozy adult loungewear suit.

How do you pronounce “onesie”?

“Onesie” is pronounced WUHN-zee (/ˈwʌn.zi/ in IPA).

How do you use “onesie” in a sentence?

Here is “onesie” used in a sentence: “They dressed the newborn in a soft cotton onesie.”

What part of speech is “onesie”?

“Onesie” is a noun.

How many meanings does “onesie” have?

“Onesie” has 2 distinct senses listed in this dictionary. The most common is: a one-piece garment, especially a snap-up outfit for a baby worn over a diaper.