# rational vs rationally

> English confusable word pair

## The two words

### rational
*adjective · IPA /ˈɹæʃ(ə)nəl/ · frequency rank #6,511*
Capable of reasoning.

### rationally
*adverb · frequency rank #26,220*
In a rational manner

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