# authenticate vs authenticity

> English confusable word pair

## The two words

### authenticate
*verb · IPA /ɒˈθɛn.tɪ.keɪt/ · frequency rank #40,567*
To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.

### authenticity
*noun · IPA /ɑθɛnˈtɪsɪti/ · frequency rank #12,910*
The quality of being genuine or not corrupted from the original, of having the same origin (or attribution, commitment, intention, etc.) as claimed.

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