arbítriovsárbitroWhich spelling fits?

Which to use

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

#18,247
“arbítrio” frequency rank
#7,583
“árbitro” frequency rank
25830
confusion score

Side-by-Side Comparison

Feature arbítrio árbitro
Definition decisão dependente apenas da vontade; alvedrio aquele que fiscaliza e faz cumprir as leis do jogo intervindo quando as mesmas são violadas

Letter map: arbítrio vs árbitro

Shared letters muted; letters that set arbítrio and árbitro apart highlighted. Shared run: 5.

8 ch
arbítrio
7 ch
árbitro

Spelling & dictionary notes on arbítrio vs árbitro

arbítrio and árbitro 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 25830, derived from the frequency rank of both members and their visual similarity.

arbítrio is recorded at frequency rank #18,247, classified as anoun. árbitro is at rank #7,583, tagged as anoun, pronounced /ˈaɾ.bi.tɾu/.

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 25830, this pair ranks #43,413 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of arbítrio vs árbitro

Shared letters: biort. Private to "arbítrio": . Private to "árbitro": á.

"arbítrio" · 8 letters · shape VCCVCCVV  ·  "árbitro" · 7 letters · shape VCCVCCV

Frequently Asked Questions

Can "arbítrio" and "árbitro" be used interchangeably?
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 "arbítrio" or "árbitro" show up more?
"árbitro" is the more common of the two: it sits at frequency rank #7,583 in our Portuguese list, against #18,247 for "arbítrio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've compared "arbítrio" and "árbitro". Here's where to go from here.

  • Full dictionary entry for "arbítrio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "árbitro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #43,413 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "arbítrio" and "árbitro" also get mixed up with nearby pairs, the highest-scored neighbour is "arbitral vs arbítrio". Nearby pair

Confusion rank #43,413 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