duvsduasConfusable pair

Quick tell: du is a pronoun, duas is a num, so they fill different roles in a sentence.

Which to use

“du” is a pronoun and “duas” is a num - they look or sound alike but fill different roles in a sentence.

#5,187
“du” frequency rank
#188
“duas” frequency rank
5375
confusion score

Side-by-Side Comparison

Feature du duas
Definition você, tu feminino de dois/dous; representado pelo símbolo 2 (algarismos indo-arábicos) ou II (algarismos romanos)

Where the eye mixes du and duas

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

2 ch
du
4 ch
duas

Look-alike desk: du vs duas

These two trip readers on the page rather than in the ear: du is /du:/ ouvir^(fonte ?) while duas is /ˈdu.ɐʃ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “du” sits inside “duas”, and the parts of speech differ too (pronoun vs num), which is usually the fastest check. Our composite confusion score for this pair is 5375, derived from the frequency rank of both members and their visual similarity.

du is recorded at frequency rank #5,187, classified as apron, pronounced /du:/ ouvir^(fonte ?). 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 5375, this pair ranks #69,251 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of du vs duas

Shared letters: du. Private to "du": -. Private to "duas": as.

"du" · 2 letters · shape CV  ·  "duas" · 4 letters · shape CVVC

Known mistypes of this pair

  • duasdaus · dduas · duass · dusa · udas

Frequently Asked Questions

Is swapping "du" for "duas" ever safe?
No - they are not even the same part of speech. "du" is a pronoun and "duas" a num, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "du" or "duas"?
"duas" is the more common of the two: it sits at frequency rank #188 in our Portuguese list, against #5,187 for "du". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Eye-level mix-up between "du" and "duas" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "du" 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 #69,251 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "du" and "duas" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs du". 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 #69,251 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list