# authentication

> English word · Noun · IPA /ɔːˌθɛntɪˈkeɪʃn̩/ · frequency rank #18,243

## Definitions
1. Something which validates or confirms the authenticity of something; or the process of doing so.
2. Proof of identity required by a user to log on to some network or access some resource.
3. A hallmark or assay-mark on a piece of metalwork.

## Etymology
From authenticate + -ation.

## Common misspellings (21)
`atuhentication`, `auhtentication`, `autehntication`, `authenitcation`, `authenntication`, `authentciation`, `authentiaction`, `authenticaiton`, `authenticasion`, `authenticatino`, `authenticationn`, `authenticatoin`, `authenticattion`, `authenticcation`, `authentictaion`, `authenttication`, `authetnication`, `authhentication`, `authnetication`, `autthentication`, `uathentication`

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