# uncertain vs uncertainty

> English confusable word pair

## The two words

### uncertain
*adjective · IPA /ʌnˈsɜːtən/ · frequency rank #7,299*
Not certain; unsure.

### uncertainty
*noun · IPA /ʌnˈsɜːtənti/ · frequency rank #6,852*
Doubt; the condition of being uncertain or without conviction.

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