oitovsonoWhich spelling fits?

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

Which to use

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

#1,099
“oito” frequency rank
#37,444
“ono” frequency rank
38543
confusion score

Side-by-Side Comparison

Feature oito ono
Definition número equivalente a sete mais um; cardinalidade de um conjunto que contenha oito elementos distintos, representado pelo símbolo 8 (algarismos arábicos) ou VIII (algarismos romanos) pronome pessoal neutro do caso nominativo da terceira pessoa do singular

Letter map: oito vs ono

Shared letters muted; letters that set oito and ono apart highlighted. Shared run: 2. oito runs 4 letters (VVCV) against ono's 3 (VCV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
oito
3 ch
ono

Role in the sentence - oito and ono

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: oito is anadjective and onoapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 38543, derived from the frequency rank of both members and their visual similarity.

oito is recorded at frequency rank #1,099, classified as anadj, pronounced /ˈoj.tu/. ono is at rank #37,444, 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 38543, this pair ranks #27,886 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of oito vs ono

Shared letters: o. Private to "oito": it. Private to "ono": n.

"oito" · 4 letters · shape VVCV  ·  "ono" · 3 letters · shape VCV

Known mistypes of this pair

  • oito ← ioto · oiot · oitto · otio

Frequently Asked Questions

Do "oito" and "ono" mean the same thing in a sentence?
No - they are not even the same part of speech. "oito" is an adjective and "ono" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "oito" or "ono"?
"oito" is the more common of the two: it sits at frequency rank #1,099 in our Portuguese list, against #37,444 for "ono". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "oito" and "ono". Here's where to go from here.

  • Full dictionary entry for "oito" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ono" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #27,886 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "oito" and "ono" 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 #27,886 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