ráciovsriachoConfusable pair

Which to use

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

#39,370
“rácio” frequency rank
#15,198
“riacho” frequency rank
54568
confusion score

Side-by-Side Comparison

Feature rácio riacho
Definition relação pequeno rio

Letter map: rácio vs riacho

Shared letters muted; letters that set rácio and riacho apart highlighted. Shared run: 3. rácio runs 5 letters (CVCVV) against riacho's 6 (CVVCCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
rácio
6 ch
riacho

Spelling & dictionary notes on rácio vs riacho

rácio and riacho are indexed as a confusable Portuguese pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 54568, derived from the frequency rank of both members and their visual similarity.

rácio is recorded at frequency rank #39,370, classified as anoun. riacho is at rank #15,198, tagged as anoun, pronounced /ˈRja.ʃu/.

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 54568, this pair ranks #11,179 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of rácio vs riacho

Shared letters: cior. Private to "rácio": á. Private to "riacho": ah.

"rácio" · 5 letters · shape CVCVV  ·  "riacho" · 6 letters · shape CVVCCV

Known mistypes of this pair

  • riacho ← iracho · raicho · riaccho · riachho · riacoh · riahco · ricaho · rriacho

Frequently Asked Questions

Do "rácio" and "riacho" mean the same thing in a sentence?
No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
In ordinary Portuguese text, does "rácio" or "riacho" show up more?
"riacho" is the more common of the two: it sits at frequency rank #15,198 in our Portuguese list, against #39,370 for "rácio". 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 "rácio" and "riacho".

  • Full dictionary entry for "rácio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "riacho" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #11,179 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "rácio" and "riacho" also get mixed up with nearby pairs, the highest-scored neighbour is "rabi vs rácio". 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 #11,179 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