onsvsonzeTell them apart

Quick tell: ons is a pronoun, onze is a num, so they fill different roles in a sentence.

Which to use

“ons” is a pronoun and “onze” is a num - they look or sound alike but fill different roles in a sentence.

#48,564
“ons” frequency rank
#5,665
“onze” frequency rank
54229
confusion score

Side-by-Side Comparison

Feature ons onze
Definition pronome pessoal neutro do caso nominativo da terceira pessoa do plural número equivalente a dez mais um; cardinalidade de um conjunto que contenha onze elementos distintos; representado pelo símbolo 11 (algarismos arábicos) ou XI (algarismos romanos)

Where the eye mixes ons and onze

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
ons
4 ch
onze

Why the eye confuses ons with onze

These two trip readers on the page rather than in the ear: ons is /ons/ while onze is /ˈõ.zɨ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (pronoun vs num), which is usually the fastest check. Our composite confusion score for this pair is 54229, derived from the frequency rank of both members and their visual similarity.

ons is recorded at frequency rank #48,564, classified as apron, pronounced /ons/. onze is at rank #5,665, tagged as anum, pronounced /ˈõ.zɨ/.

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 54229, this pair ranks #11,428 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ons vs onze

Shared letters: no. Private to "ons": s. Private to "onze": ez.

"ons" · 3 letters · shape VCC  ·  "onze" · 4 letters · shape VCCV

Known mistypes of this pair

  • onzenoze · onez · onnze · onzze · ozne

Frequently Asked Questions

Can "ons" and "onze" be used interchangeably?
No - they are not even the same part of speech. "ons" is a pronoun and "onze" a num, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "ons" or "onze" show up more?
"onze" is the more common of the two: it sits at frequency rank #5,665 in our Portuguese list, against #48,564 for "ons". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "ons" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "onze" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #11,428 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ons" and "onze" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ons". 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 #11,428 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