óciovsoniTell them apart

Quick tell: ócio is a noun, oni is a pronoun, so they fill different roles in a sentence.

Which to use

“ócio” is a noun and “oni” is a pronoun - they look or sound alike but fill different roles in a sentence.

#34,525
“ócio” frequency rank
#49,618
“oni” frequency rank
84143
confusion score

Side-by-Side Comparison

Feature ócio oni
Definition não ter nada o que fazer pronome pessoal do caso nominativo da terceira pessoa do plural de gênero masculino pessoal, eles

Letter map: ócio vs oni

Shared letters muted; letters that set ócio and oni apart highlighted. Shared run: 1.

4 ch
ócio
3 ch
oni

Part-of-speech tell for ócio / oni

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ócio is anoun and oniapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 84143, derived from the frequency rank of both members and their visual similarity.

ócio is recorded at frequency rank #34,525, classified as anoun, pronounced /ˈɔ.sju/. oni is at rank #49,618, tagged as apron.

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 84143, this pair ranks #832 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ócio vs oni

Shared letters: io. Private to "ócio": . Private to "oni": n.

"ócio" · 4 letters · shape VCVV  ·  "oni" · 3 letters · shape VCV

Frequently Asked Questions

Can "ócio" and "oni" be used interchangeably?
No - they are not even the same part of speech. "ócio" is a noun and "oni" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "ócio" vs "oni" - which ranks higher?
"ócio" is the more common of the two: it sits at frequency rank #34,525 in our Portuguese list, against #49,618 for "oni". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "ócio" and "oni". Here's where to go from here.

  • Full dictionary entry for "ócio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "oni" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #832 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ócio" and "oni" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ons". Nearby pair

Confusion rank #832 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