onovsossoConfusable pair

Quick tell: ono is a pronoun, osso is an adjective, so they fill different roles in a sentence.

Which to use

“ono” is a pronoun and “osso” is an adjective - they look or sound alike but fill different roles in a sentence.

#37,444
“ono” frequency rank
#5,563
“osso” frequency rank
43007
confusion score

Side-by-Side Comparison

Feature ono osso
Definition pronome pessoal neutro do caso nominativo da terceira pessoa do singular árduo, difícil; complicado

Letter map: ono vs osso

Shared letters muted; letters that set ono and osso apart highlighted. Shared run: 2.

3 ch
ono
4 ch
osso

Role in the sentence - ono and osso

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ono is apronoun and ossoanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 43007, derived from the frequency rank of both members and their visual similarity.

ono is recorded at frequency rank #37,444, classified as apron. osso is at rank #5,563, tagged as anadj, pronounced /ˈo.su/.

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 43007, this pair ranks #22,677 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ono vs osso

Shared letters: o. Private to "ono": n. Private to "osso": s.

"ono" · 3 letters · shape VCV  ·  "osso" · 4 letters · shape VCCV

Known mistypes of this pair

  • ossooso · osos · soso

Frequently Asked Questions

Do "ono" and "osso" mean the same thing in a sentence?
No - they are not even the same part of speech. "ono" is a pronoun and "osso" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "ono" or "osso" show up more?
"osso" is the more common of the two: it sits at frequency rank #5,563 in our Portuguese list, against #37,444 for "ono". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "ono" vs "osso" is on the table, pick a follow-up below.

  • Full dictionary entry for "ono" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "osso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #22,677 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ono" and "osso" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ono". 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 #22,677 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