# rational vs rationale

> German confusable word pair

## The two words

### rational
*adjective · IPA [ˌʁat͡si̯oˈnaːl] · frequency rank #16,522*
mit dem Verstand, der Vernunft zu tun habend

### rationale
*adjective · IPA [ˌʁat͡si̯oˈnaːlə] · frequency rank #18,669*
Nominativ Singular Femininum der starken Deklination des Positivs des Adjektivs rational

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