Which to use
“dia” is a noun and “dos” is a num - they look or sound alike but fill different roles in a sentence.
- #51
- “dia” frequency rank
- #24
- “dos” frequency rank
- 75
- confusion score
Side-by-Side Comparison
| Feature | dia | dos |
|---|---|---|
| Definition | espaço de tempo correspondente à rotação da Terra, que equivale a 23 horas, 56 minutos e 4 segundos | o número dois |
Where the eye mixes dia and dos
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses dia with dos
These two trip readers on the page rather than in the ear: dia is /'dʒi.a/ while dos is /dɔs/. 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 num), which is usually the fastest check. Our composite confusion score for this pair is 75, derived from the frequency rank of both members and their visual similarity.
dia is recorded at frequency rank #51, classified as anoun, pronounced /'dʒi.a/. dos is at rank #24, tagged as anum, pronounced /dɔs/.
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 75, this pair ranks #75,577 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of dia vs dos
Shared letters: d. Private to "dia": ai. Private to "dos": os.
"dia" · 3 letters · shape CVV · "dos" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "dia" for "dos" ever safe?
In ordinary Portuguese text, does "dia" or "dos" 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 "dia" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dos" - compare definitions side by side with the headword page. Word entry
- This pair ranks #75,577 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "dia" and "dos" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs dia". Nearby pair
Confusion rank #75,577 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.