apoiovsarroioTell them apart

Which to use

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

#517
“apoio” frequency rank
#31,648
“arroio” frequency rank
32165
confusion score

Side-by-Side Comparison

Feature apoio arroio
Definition encosto: ribeiro

Letter map: apoio vs arroio

Shared letters muted; letters that set apoio and arroio apart highlighted. Shared run: 4. apoio runs 5 letters (VCVVV) against arroio's 6 (VCCVVV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
apoio
6 ch
arroio

Corpus notes: apoio and arroio

apoio and arroio 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 32165, derived from the frequency rank of both members and their visual similarity.

apoio is recorded at frequency rank #517, classified as anoun. arroio is at rank #31,648, tagged as anoun, pronounced /a.ˈχoj.u/.

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 32165, this pair ranks #35,729 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of apoio vs arroio

Shared letters: aio. Private to "apoio": p. Private to "arroio": r.

"apoio" · 5 letters · shape VCVVV  ·  "arroio" · 6 letters · shape VCCVVV

Known mistypes of this pair

  • apoio ← aopio · apioo · apooi · appoio · paoio
  • arroio ← aroio · arorio · arrioo · arrooi · raroio

Frequently Asked Questions

Is swapping "apoio" for "arroio" ever safe?
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.
Which is more common, "apoio" or "arroio"?
"apoio" is the more common of the two: it sits at frequency rank #517 in our Portuguese list, against #31,648 for "arroio". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "apoio" and "arroio".

  • Full dictionary entry for "apoio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "arroio" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #35,729 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "apoio" and "arroio" also get mixed up with nearby pairs, the highest-scored neighbour is "arraia vs arroio". 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 #35,729 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