sono vs sós, What's the Difference?

Which to use

“sono” is a noun and “sós” is an adjective - they look or sound alike but fill different roles in a sentence.

#2,910
“sono” frequency rank: #16,887
“sós” frequency rank: 19797
confusion score

Side-by-Side Comparison

Feature	sono	sós
Definition	necessidade, vontade de dormir	plural de só

Letter map: sono vs sós

Shared letters muted; letters that set sono and sós apart highlighted. Shared run: 1.

4 ch

sono

3 ch

sós

Grammar separator: sono vs sós

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sono is anoun and sósanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 19797, derived from the frequency rank of both members and their visual similarity.

sono is recorded at frequency rank #2,910, classified as anoun, pronounced /ˈso.nu/. sós is at rank #16,887, tagged as anadj.

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 19797, this pair ranks #50,846 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sono vs sós

Shared letters: s. Private to "sono": no. Private to "sós": ó.

"sono" · 4 letters · shape CVCV · "sós" · 3 letters · shape CVC

Known mistypes of this pair

sono ← osno · snoo · sonno · soon · ssono

Frequently Asked Questions

Can "sono" and "sós" be used interchangeably?

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

Which is more common, "sono" or "sós"?

"sono" is the more common of the two: it sits at frequency rank #2,910 in our Portuguese list, against #16,887 for "sós". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "sono" and "sós". Here's where to go from here.

Full dictionary entry for "sono" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "sós" - compare definitions side by side with the headword page. Word entry
This pair ranks #50,846 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"sono" and "sós" also get mixed up with nearby pairs, the highest-scored neighbour is "soap vs sós". 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 #50,846 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.