Which to use
“ferrão” and “fierro” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #31,372
- “ferrão” frequency rank
- #45,359
- “fierro” frequency rank
- 76731
- confusion score
Side-by-Side Comparison
| Feature | ferrão | fierro |
|---|---|---|
| Definition | órgão retrátil dos insetos | ferro |
Where the eye mixes ferrão and fierro
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. ferrão (CVCCVV) and fierro (CVVCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses ferrão with fierro
A purely visual mix-up. ferrão (/fɨ.ˈRɐ̃w̃/) and fierro (/ˈfjero/.) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 3 positions. Our composite confusion score for this pair is 76731, derived from the frequency rank of both members and their visual similarity.
ferrão is recorded at frequency rank #31,372, classified as anoun, pronounced /fɨ.ˈRɐ̃w̃/. fierro is at rank #45,359, tagged as anoun, pronounced /ˈfjero/..
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 76731, this pair ranks #2,030 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of ferrão vs fierro
Shared letters: efor. Private to "ferrão": ã. Private to "fierro": i.
"ferrão" · 6 letters · shape CVCCVV · "fierro" · 6 letters · shape CVVCCV
Known mistypes of this pair
- fierro ← feirro · ffierro · fiero · fieror · firero · iferro
Frequently Asked Questions
Do "ferrão" and "fierro" mean the same thing in a sentence?
Which is more common, "ferrão" or "fierro"?
Useful next steps
Eye-level mix-up between "ferrão" and "fierro" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "ferrão" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fierro" - compare definitions side by side with the headword page. Word entry
- This pair ranks #2,030 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ferrão" and "fierro" also get mixed up with nearby pairs, the highest-scored neighbour is "ferra vs fierro". 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 #2,030 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.