sairvssinWhat's the difference?

Quick tell: sair is a verb, sin is a pronoun, so they fill different roles in a sentence.

Which to use

“sair” is a verb and “sin” is a pronoun - they look or sound alike but fill different roles in a sentence.

#290
“sair” frequency rank
#8,687
“sin” frequency rank
8977
confusion score

Side-by-Side Comparison

Feature sair sin
Definition passar de dentro para fora; deixar aquilo, aquele

Letter map: sair vs sin

Shared letters muted; letters that set sair and sin apart highlighted. Shared run: 2.

4 ch
sair
3 ch
sin

Role in the sentence - sair and sin

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sair is averb and sinapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 8977, derived from the frequency rank of both members and their visual similarity.

sair is recorded at frequency rank #290, classified as averb, pronounced /sɐ.ˈiɾ/. sin is at rank #8,687, tagged as apron.

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 8977, this pair ranks #64,610 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sair vs sin

Shared letters: is. Private to "sair": ar. Private to "sin": n.

"sair" · 4 letters · shape CVVC  ·  "sin" · 3 letters · shape CVC

Known mistypes of this pair

  • sairasir · sairr · sari · siar · ssair

Frequently Asked Questions

Is swapping "sair" for "sin" ever safe?
No - they are not even the same part of speech. "sair" is a verb and "sin" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sair" or "sin"?
"sair" is the more common of the two: it sits at frequency rank #290 in our Portuguese list, against #8,687 for "sin". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pair "sair" vs "sin" is on the table, pick a follow-up below.

  • Full dictionary entry for "sair" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sin" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #64,610 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sair" and "sin" also get mixed up with nearby pairs, the highest-scored neighbour is "Sau vs sin". 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 #64,610 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