Which to use
“du” is a pronoun and “dúo” is a noun - they look or sound alike but fill different roles in a sentence.
- #5,609
- “du” frequency rank
- #12,808
- “dúo” frequency rank
- 18417
- confusion score
Side-by-Side Comparison
| Feature | du | dúo |
|---|---|---|
| Definition | Tú (pronombre de segunda persona singular familiar o informal) | Composición musical escrita para ser interpretada por dos instrumentos o dos voces. |
Where the eye mixes du and dúo
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses du with dúo
These two trip readers on the page rather than in the ear: du is [duː] while dúo is [ˈd̪uo]. 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 (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 18417, derived from the frequency rank of both members and their visual similarity.
du is recorded at frequency rank #5,609, classified as apron, pronounced [duː]. dúo is at rank #12,808, tagged as anoun, pronounced [ˈd̪uo].
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 18417, this pair ranks #268,001 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of du vs dúo
Shared letters: d. Private to "du": u. Private to "dúo": oú.
"du" · 2 letters · shape CV · "dúo" · 3 letters · shape CVV
Frequently Asked Questions
Is swapping "du" for "dúo" ever safe?
In ordinary Spanish text, does "du" or "dúo" show up more?
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 "du" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dúo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #268,001 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "du" and "dúo" also get mixed up with nearby pairs, the highest-scored neighbour is "divo vs dúo". Nearby pair
Confusion rank #268,001 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.