Which to use
“quarto” is an adjective and “quatro” is a noun - they look or sound alike but fill different roles in a sentence.
- #589
- “quarto” frequency rank
- #353
- “quatro” frequency rank
- 942
- confusion score
Side-by-Side Comparison
| Feature | quarto | quatro |
|---|---|---|
| Definition | refere-se àquele que ocupa a posição quaternária em uma série; o que vem depois do terceiro | o número quatro (4, IV) |
Where the spellings diverge
Shared letters are muted; the letters that actually set quarto and quatro apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: quarto is /ˈkwaɾ.tu/ while quatro is /ˈkwa.tɾu/. Spoken aloud the problem disappears. In writing it persists, because they differ only by swapping two adjacent letters (rt ↔ tr) - a transposition the eye reads straight past, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 942, derived from the frequency rank of both members and their visual similarity.
quarto is recorded at frequency rank #589, classified as anadj, pronounced /ˈkwaɾ.tu/. quatro is at rank #353, tagged as anoun, pronounced /ˈkwa.tɾu/.
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 942, this pair ranks #74,686 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of quarto vs quatro
Shared letters: aoqrtu. Private to "quarto": -. Private to "quatro": -.
"quarto" · 6 letters · shape CVVCCV · "quatro" · 6 letters · shape CVVCCV
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "quarto" and "quatro" be used interchangeably?
Which is more common, "quarto" or "quatro"?
Remembering quarto vs quatro
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “quarto”; for a noun, it's “quatro”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “quarto” entry
- Browse more pairs most likely to be confused. Most confusable