Which to use
“ostra” is a noun and “outro” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #37,449
- “ostra” frequency rank
- #141
- “outro” frequency rank
- 37590
- confusion score
Side-by-Side Comparison
| Feature | ostra | outro |
|---|---|---|
| Definition | nome comum a vários moluscos bivalves da família dos ostreídeos, alguns tendo importância econômica por serem comestíveis e de alto valor nutritivo, outras espécies que são cultivadas para a produção de pérolas, que vivem fixados a alguma base | que é diferente da pessoa ou da coisa que foi mencionada; que não é o mesmo; diverso, diferente |
Where the eye mixes ostra and outro
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. ostra (VCCCV) and outro (VVCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses ostra with outro
These two trip readers on the page rather than in the ear: ostra is /ˈos.tɾɐ/ while outro is /ˈow.tɾu/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 37590, derived from the frequency rank of both members and their visual similarity.
ostra is recorded at frequency rank #37,449, classified as anoun, pronounced /ˈos.tɾɐ/. outro is at rank #141, tagged as apron, pronounced /ˈow.tɾu/.
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 37590, this pair ranks #28,994 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ostra vs outro
Shared letters: ort. Private to "ostra": as. Private to "outro": u.
"ostra" · 5 letters · shape VCCCV · "outro" · 5 letters · shape VVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "ostra" and "outro" mean the same thing in a sentence?
Frequency check: "ostra" vs "outro" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "ostra" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "outro" - compare definitions side by side with the headword page. Word entry
- This pair ranks #28,994 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ostra" and "outro" also get mixed up with nearby pairs, the highest-scored neighbour is "ostra vs ota". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #28,994 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.