# unauthorised vs unauthorized

> English confusable word pair

## The two words

### unauthorised
*adjective · frequency rank #28,775*
Alternative spelling of unauthorized.

### unauthorized
*adjective · frequency rank #13,630*
Not having any authority.

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