# certain vs Curtin

> English confusable word pair

## The two words

### certain
*adjective · IPA /ˈsɜː.tən/ · frequency rank #707*
Sure in one's mind, positive; absolutely confident in the truth of something.

### Curtin
*name · IPA /ˈkɜː(ɹ)tɪn/ · frequency rank #35,240*
A surname.

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