Which to use
“ou” is a conjunction and “ouro” is an adjective - they look or sound alike but fill different roles in a sentence.
- #36
- “ou” frequency rank
- #876
- “ouro” frequency rank
- 912
- confusion score
Side-by-Side Comparison
| Feature | ou | ouro |
|---|---|---|
| Definition | une palavras ou orações, podendo designar alternativa ou incompatibilidade | da cor de ouro |
Where the eye mixes ou and ouro
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between ou and ouro
These two trip readers on the page rather than in the ear: ou is /ow/, /o/ while ouro is /ˈow.ɾu/, /ˈo.ɾu/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “ou” sits inside “ouro”, and the parts of speech differ too (conjunction vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 912, derived from the frequency rank of both members and their visual similarity.
ou is recorded at frequency rank #36, classified as aconj, pronounced /ow/, /o/. ouro is at rank #876, tagged as anadj, pronounced /ˈow.ɾu/, /ˈo.ɾu/.
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 912, this pair ranks #74,714 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of ou vs ouro
Shared letters: ou. Private to "ou": -. Private to "ouro": r.
"ou" · 2 letters · shape VV · "ouro" · 4 letters · shape VVCV
Known mistypes of this pair
- ouro ← oruo · ouor · ourro · uoro
Frequently Asked Questions
Can "ou" and "ouro" be used interchangeably?
In ordinary Portuguese text, does "ou" or "ouro" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "ou" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ouro" - compare definitions side by side with the headword page. Word entry
- This pair ranks #74,714 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ou" and "ouro" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ou". 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 #74,714 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.