on vs ons, What's the Difference?

Which to use

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

#675
“on” frequency rank: #48,564
“ons” frequency rank: 49239
confusion score

Side-by-Side Comparison

Feature	on	ons
Definition	ligado, ativo (na internet)	pronome pessoal neutro do caso nominativo da terceira pessoa do plural

Letter map: on vs ons

Shared letters muted; letters that set on and ons apart highlighted. Shared run: 2.

2 ch

3 ch

ons

Part-of-speech tell for on / ons

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: on is anadjective and onsapronoun. On the page they differ by 1 extra letter(s) - “on” sits inside “ons”. Our composite confusion score for this pair is 49239, derived from the frequency rank of both members and their visual similarity.

on is recorded at frequency rank #675, classified as anadj. 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 49239, this pair ranks #15,811 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of on vs ons

Shared letters: no. Private to "on": -. Private to "ons": s.

"on" · 2 letters · shape VC · "ons" · 3 letters · shape VCC

Frequently Asked Questions

Can "on" and "ons" be used interchangeably?

No - they are not even the same part of speech. "on" is an adjective and "ons" a pronoun, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "on" vs "ons" - which ranks higher?

"on" is the more common of the two: it sits at frequency rank #675 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.

What to do next

Done with this confusable. These links stay specific to "on" and "ons".

Full dictionary entry for "on" 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 #15,811 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"on" and "ons" also get mixed up with nearby pairs, the highest-scored neighbour is "oni vs ons". Nearby pair

Confusion rank #15,811 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.