Which to use
“unstable” and “unusable” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #8,741
- “unstable” frequency rank
- #30,272
- “unusable” frequency rank
- 39013
- confusion score
Side-by-Side Comparison
| Feature | unstable | unusable |
|---|---|---|
| Definition | Not stable. | Not usable. |
Letter map: unstable vs unusable
Shared letters muted; letters that set unstable and unusable apart highlighted. Shared run: 7.
Spelling & Dictionary Insight
unstable and unusable are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 39013, derived from the frequency rank of both members and their visual similarity.
unstable is recorded at frequency rank #8,741, classified as anadj, pronounced /ʌnˈsteɪ.bəl/. unusable is at rank #30,272, tagged as anadj.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 39013, this pair ranks #280,668 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of unstable vs unusable
Shared letters: abelnsu. Private to "unstable": t. Private to "unusable": -.
"unstable" · 8 letters · shape VCCCVCCV · "unusable" · 8 letters · shape VCVCVCCV