# unstable vs unusable

> English confusable word pair

## The two words

### unstable
*adjective · IPA /ʌnˈsteɪ.bəl/ · frequency rank #8,741*
Not stable.

### unusable
*adjective · frequency rank #30,272*
Not usable.

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