Which to use
“dun” is a noun and “duro” is an adjective - they look or sound alike but fill different roles in a sentence.
- #45,320
- “dun” frequency rank
- #3,070
- “duro” frequency rank
- 48390
- confusion score
Side-by-Side Comparison
| Feature | dun | duro |
|---|---|---|
| Definition | penugem imatura em pássaros jovens | difícil de quebrar ou de desfazer |
Letter map: dun vs duro
Shared letters muted; letters that set dun and duro apart highlighted. Shared run: 2. dun runs 3 letters (CVC) against duro's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: dun vs duro
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: dun is anoun and duroanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 48390, derived from the frequency rank of both members and their visual similarity.
dun is recorded at frequency rank #45,320, classified as anoun, pronounced /duːn/, [d̥uːˀn]. duro is at rank #3,070, tagged as anadj.
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 48390, this pair ranks #16,784 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of dun vs duro
Shared letters: du. Private to "dun": n. Private to "duro": or.
"dun" · 3 letters · shape CVC · "duro" · 4 letters · shape CVCV
Known mistypes of this pair
- duro ← dduro · druo · duor · durro · udro
Frequently Asked Questions
Do "dun" and "duro" mean the same thing in a sentence?
Frequency check: "dun" vs "duro" - which ranks higher?
After this comparison
Done with this confusable. These links stay specific to "dun" and "duro".
- Full dictionary entry for "dun" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "duro" - compare definitions side by side with the headword page. Word entry
- This pair ranks #16,784 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "dun" and "duro" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs dun". 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 #16,784 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.