Which to use
“rio” is a noun and “rodo” is a verb - they look or sound alike but fill different roles in a sentence.
- #173
- “rio” frequency rank
- #37,079
- “rodo” frequency rank
- 37252
- confusion score
Side-by-Side Comparison
| Feature | rio | rodo |
|---|---|---|
| Definition | curso por onde passa água doce continuamente (ou durante épocas específicas do ano) | roer |
Where the eye mixes rio and rodo
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses rio with rodo
These two trip readers on the page rather than in the ear: rio is /ʁi.u/ [ʁiu̯] while rodo is /ˈroː.doː/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 37252, derived from the frequency rank of both members and their visual similarity.
rio is recorded at frequency rank #173, classified as anoun, pronounced /ʁi.u/ [ʁiu̯]. rodo is at rank #37,079, tagged as averb, pronounced /ˈroː.doː/.
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 37252, this pair ranks #29,412 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of rio vs rodo
Shared letters: or. Private to "rio": i. Private to "rodo": d.
"rio" · 3 letters · shape CVV · "rodo" · 4 letters · shape CVCV
Known mistypes of this pair
- rodo ← ordo · rdoo · roddo · rood · rrodo
Frequently Asked Questions
Can "rio" and "rodo" be used interchangeably?
Frequency check: "rio" vs "rodo" - which ranks higher?
After this comparison
Eye-level mix-up between "rio" and "rodo" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "rio" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rodo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #29,412 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "rio" and "rodo" also get mixed up with nearby pairs, the highest-scored neighbour is "robe vs rodo". 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 #29,412 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.