ricovsrioWhich spelling fits?

Quick tell: rico is a adjective, rio is a noun, so they fill different roles in a sentence.

Which to use

“rico” is an adjective and “rio” is a noun - they look or sound alike but fill different roles in a sentence.

#1,724
“rico” frequency rank
#173
“rio” frequency rank
1897
confusion score

Side-by-Side Comparison

Feature rico rio
Definition diz-se de quem tem muito dinheiro curso por onde passa água doce continuamente (ou durante épocas específicas do ano)

Letter map: rico vs rio

Shared letters muted; letters that set rico and rio apart highlighted. Shared run: 3.

4 ch
rico
3 ch
rio

Role in the sentence - rico and rio

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: rico is anadjective and rioanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 1897, derived from the frequency rank of both members and their visual similarity.

rico is recorded at frequency rank #1,724, classified as anadj. 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 1897, this pair ranks #73,628 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of rico vs rio

Shared letters: ior. Private to "rico": c. Private to "rio": -.

"rico" · 4 letters · shape CVCV  ·  "rio" · 3 letters · shape CVV

Known mistypes of this pair

  • ricoirco · rcio · ricco · rioc · rrico

Frequently Asked Questions

Is swapping "rico" for "rio" ever safe?
No - they are not even the same part of speech. "rico" is an adjective and "rio" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "rico" vs "rio" - which ranks higher?
"rio" is the more common of the two: it sits at frequency rank #173 in our Portuguese list, against #1,724 for "rico". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "rico" and "rio".

  • Full dictionary entry for "rico" 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 #73,628 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "rico" and "rio" also get mixed up with nearby pairs, the highest-scored neighbour is "ratio vs rio". 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 #73,628 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list