# O'Neill vs O'Reilly

> English confusable word pair

## The two words

### O'Neill
*name · IPA /əʊˈniːl/ · frequency rank #11,572*
A surname from Irish.

### O'Reilly
*name · IPA /əˈɹaɪli/ · frequency rank #18,638*
A surname from Irish [in turn originating as a patronymic] from Reilly.

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