Which to use
“imutável” and “instável” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #35,194
- “imutável” frequency rank
- #9,871
- “instável” frequency rank
- 45065
- confusion score
Side-by-Side Comparison
| Feature | imutável | instável |
|---|---|---|
| Definition | diz-se daquilo que não se muda | não estável |
Letter map: imutável vs instável
Shared letters muted; letters that set imutável and instável apart highlighted. Shared run: 6. imutável (VCVCVCVC) and instável (VCCCVCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Corpus notes: imutável and instável
imutável and instável are indexed as a confusable Portuguese 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 45065, derived from the frequency rank of both members and their visual similarity.
imutável is recorded at frequency rank #35,194, classified as anadj. instável is at rank #9,871, tagged as anadj, pronounced /ĩʃ.ˈta.vɛɫ/.
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 45065, this pair ranks #20,367 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of imutável vs instável
Shared letters: eiltvá. Private to "imutável": mu. Private to "instável": ns.
"imutável" · 8 letters · shape VCVCVCVC · "instável" · 8 letters · shape VCCCVCVC
Frequently Asked Questions
Do "imutável" and "instável" mean the same thing in a sentence?
Which is more common, "imutável" or "instável"?
Useful next steps
Done with this confusable. These links stay specific to "imutável" and "instável".
- Full dictionary entry for "imutável" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "instável" - compare definitions side by side with the headword page. Word entry
- This pair ranks #20,367 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "imutável" and "instável" also get mixed up with nearby pairs, the highest-scored neighbour is "inegável vs instável". Nearby pair
Confusion rank #20,367 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.