# o vs on

> English confusable word pair

## The two words

### o
*character · IPA /ˈəʊ/ · frequency rank #790*
The fifteenth letter of the English alphabet, called o and written in the Latin script.

### on
*adjective · IPA /ɒn/ · frequency rank #13*
In the state of being active, functioning or operating.

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