# atta vs auth

> English confusable word pair

## The two words

### atta
*contraction · frequency rank #29,174*
that's the; that's a

### 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/atta-vs-auth