si vs sós, What's the Difference?

Which to use

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

#482
“si” frequency rank: #16,887
“sós” frequency rank: 17369
confusion score

Side-by-Side Comparison

Feature	si	sós
Definition	refere-se à terceira pessoa, indica reflexividade e é usado após preposição (a, de, em, contra, sobre, por, etc., exceto com)	plural de só

Letter map: si vs sós

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

2 ch

3 ch

sós

Grammar separator: si vs sós

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: si is apronoun and sósanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 17369, derived from the frequency rank of both members and their visual similarity.

si is recorded at frequency rank #482, classified as apron, pronounced /ˈsi/. 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 17369, this pair ranks #53,896 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of si vs sós

Shared letters: s. Private to "si": i. Private to "sós": ó.

"si" · 2 letters · shape CV · "sós" · 3 letters · shape CVC

Frequently Asked Questions

Do "si" and "sós" mean the same thing in a sentence?

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

Frequency check: "si" vs "sós" - which ranks higher?

"si" is the more common of the two: it sits at frequency rank #482 in our Portuguese list, against #16,887 for "sós". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

Full dictionary entry for "si" 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 #53,896 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"si" and "sós" also get mixed up with nearby pairs, the highest-scored neighbour is "soap vs sós". Nearby pair

Confusion rank #53,896 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.