ré vs rio, What's the Difference?

Which to use

“ré” and “rio” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#9,922
“ré” frequency rank: #173
“rio” frequency rank: 10095
confusion score

Side-by-Side Comparison

Feature	ré	rio
Definition	segunda nota musical da escala de dó maior	curso por onde passa água doce continuamente (ou durante épocas específicas do ano)

Where the eye mixes ré and rio

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

2 ch

ré

3 ch

rio

Why the eye confuses ré with rio

A purely visual mix-up. ré (/ˈRɛ/) and rio (/ʁi.u/ [ʁiu̯]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 10095, derived from the frequency rank of both members and their visual similarity.

ré is recorded at frequency rank #9,922, classified as anoun, pronounced /ˈRɛ/. rio is at rank #173, tagged as anoun, pronounced /ʁi.u/ [ʁiu̯].

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 10095, this pair ranks #63,126 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ré vs rio

Shared letters: r. Private to "ré": é. Private to "rio": io.

"ré" · 2 letters · shape CV · "rio" · 3 letters · shape CVV

Frequently Asked Questions

Do "ré" and "rio" mean the same thing in a sentence?

No. They are said differently (/ˈRɛ/ versus /ʁi.u/ [ʁiu̯]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "ré" or "rio"?

"rio" is the more common of the two: it sits at frequency rank #173 in our Portuguese list, against #9,922 for "ré". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

Full dictionary entry for "ré" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "rio" - compare definitions side by side with the headword page. Word entry
This pair ranks #63,126 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ré" and "rio" also get mixed up with nearby pairs, the highest-scored neighbour is "ré vs robe". Nearby pair

Confusion rank #63,126 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.