ondevsonsWhich spelling fits?

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

Which to use

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

#78
“onde” frequency rank
#48,564
“ons” frequency rank
48642
confusion score

Side-by-Side Comparison

Feature onde ons
Definition o lugar em que; o lugar no qual pronome pessoal neutro do caso nominativo da terceira pessoa do plural

Where the eye mixes onde and ons

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

4 ch
onde
3 ch
ons

Look-alike desk: onde vs ons

These two trip readers on the page rather than in the ear: onde is /ˈõ.dɨ/ while ons is /ons/. 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 (adverb vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 48642, derived from the frequency rank of both members and their visual similarity.

onde is recorded at frequency rank #78, classified as anadv, pronounced /ˈõ.dɨ/. ons is at rank #48,564, tagged as apron, pronounced /ons/.

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 48642, this pair ranks #16,520 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of onde vs ons

Shared letters: no. Private to "onde": de. Private to "ons": s.

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

Known mistypes of this pair

  • ondenode · odne · ondde · oned · onnde

Frequently Asked Questions

Is swapping "onde" for "ons" ever safe?
No - they are not even the same part of speech. "onde" is an adverb and "ons" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "onde" vs "ons" - which ranks higher?
"onde" is the more common of the two: it sits at frequency rank #78 in our Portuguese list, against #48,564 for "ons". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "onde" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ons" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #16,520 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "onde" and "ons" 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 #16,520 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