Which to use
“dia” is a noun and “do” is a contraction - they look or sound alike but fill different roles in a sentence.
- #51
- “dia” frequency rank
- #6
- “do” frequency rank
- 57
- confusion score
Side-by-Side Comparison
| Feature | dia | do |
|---|---|---|
| Definition | espaço de tempo correspondente à rotação da Terra, que equivale a 23 horas, 56 minutos e 4 segundos | contração da preposição de com o artigo definido o |
Where the eye mixes dia and do
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: dia vs do
These two trip readers on the page rather than in the ear: dia is /'dʒi.a/ while do is /du/ (/do/, se enfático). Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs contraction), which is usually the fastest check. Our composite confusion score for this pair is 57, 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/. do is at rank #6, tagged as acontraction, pronounced /du/ (/do/, se enfático).
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 57, this pair ranks #75,593 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of dia vs do
Shared letters: d. Private to "dia": ai. Private to "do": o.
"dia" · 3 letters · shape CVV · "do" · 2 letters · shape CV
Frequently Asked Questions
Do "dia" and "do" mean the same thing in a sentence?
Frequency check: "dia" vs "do" - which ranks higher?
After this comparison
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 "do" - compare definitions side by side with the headword page. Word entry
- This pair ranks #75,593 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "dia" and "do" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs dia". Nearby pair
Confusion rank #75,593 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.