# amplitude vs aptitude

> English confusable word pair

## The two words

### amplitude
*noun · IPA /ˈæm.plɪ.tud/ · frequency rank #20,031*
The measure of the size of something, especially its width or breadth; largeness, magnitude.

### aptitude
*noun · IPA /ˈæptɪˌtjuːd/ · frequency rank #22,291*
Natural ability to acquire knowledge or skill.

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