Which to use
“day” is a noun and “duas” is a num - they look or sound alike but fill different roles in a sentence.
- #2,512
- “day” frequency rank
- #188
- “duas” frequency rank
- 2700
- confusion score
Side-by-Side Comparison
| Feature | day | duas |
|---|---|---|
| Definition | dia (período de 24 horas) | feminino de dois/dous; representado pelo símbolo 2 (algarismos indo-arábicos) ou II (algarismos romanos) |
Where the eye mixes day and duas
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses day with duas
These two trip readers on the page rather than in the ear: day is /deɪ/ while duas is /ˈdu.ɐʃ/. 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 num), which is usually the fastest check. Our composite confusion score for this pair is 2700, derived from the frequency rank of both members and their visual similarity.
day is recorded at frequency rank #2,512, classified as anoun, pronounced /deɪ/. duas is at rank #188, tagged as anum, pronounced /ˈdu.ɐʃ/.
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 2700, this pair ranks #72,596 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of day vs duas
Shared letters: ad. Private to "day": y. Private to "duas": su.
"day" · 3 letters · shape CVV · "duas" · 4 letters · shape CVVC
Known mistypes of this pair
- duas ← daus · dduas · duass · dusa · udas
Frequently Asked Questions
Can "day" and "duas" be used interchangeably?
Frequency check: "day" vs "duas" - 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 "day" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "duas" - compare definitions side by side with the headword page. Word entry
- This pair ranks #72,596 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "day" and "duas" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs day". 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 #72,596 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.