saisvssinWhat's the difference?

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

Which to use

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

#11,150
“sais” frequency rank
#8,687
“sin” frequency rank
19837
confusion score

Side-by-Side Comparison

Feature sais sin
Definition substâncias voláteis dadas a uma pessoa desmaiada para fazer com que ela acorde aquilo, aquele

Letter map: sais vs sin

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

4 ch
sais
3 ch
sin

Part-of-speech tell for sais / sin

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sais is anoun and sinapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 19837, derived from the frequency rank of both members and their visual similarity.

sais is recorded at frequency rank #11,150, classified as anoun. 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 19837, this pair ranks #50,802 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sais vs sin

Shared letters: is. Private to "sais": a. Private to "sin": n.

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

Known mistypes of this pair

  • saissaiss · sasi · sias · ssais

Frequently Asked Questions

Do "sais" and "sin" mean the same thing in a sentence?
No - they are not even the same part of speech. "sais" is a noun and "sin" a pronoun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "sais" or "sin" show up more?
"sin" is the more common of the two: it sits at frequency rank #8,687 in our Portuguese list, against #11,150 for "sais". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "sais" and "sin".

  • Full dictionary entry for "sais" 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 #50,802 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sais" and "sin" also get mixed up with nearby pairs, the highest-scored neighbour is "sais vs Sau". 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 #50,802 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