# onesie

> English word · Noun · IPA /ˈwʌn.zi/ · frequency rank #42,306

## Definitions
1. Any of various one-piece attires
2. Any of various one-piece attires:
3. Any of various one-piece attires:
4. Any of various one-piece attires:

## Etymology
From the Gerber Childrenswear brand name Onesies. The name became generic and was reinterpreted as a plural, hence the new singular and decapitalized onesie. Equivalent to one + -sie.

## Easily confused with
- **onsite** (https://plainspell.com/en/vs/onesie-vs-onsite)
- **onside** (https://plainspell.com/en/vs/onesie-vs-onside)
- **onetime** (https://plainspell.com/en/vs/onesie-vs-onetime)
- **ones** (https://plainspell.com/en/vs/ones-vs-onesie)
- **obese** (https://plainspell.com/en/vs/obese-vs-onesie)

## Common misspellings (7)
`noesie`, `oensie`, `oneise`, `onesei`, `onessie`, `onnesie`, `onseie`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/onesie