# apt vs auth

> English confusable word pair

## The two words

### apt
*adjective · IPA /æpt/ · frequency rank #11,337*
Suitable; appropriate; fit or fitted; suited.

### auth
*noun · frequency rank #30,696*
Abbreviation of authentication.

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