saisvssiWhat's the difference?

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

Which to use

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

#11,150
“sais” frequency rank
#482
“si” frequency rank
11632
confusion score

Side-by-Side Comparison

Feature sais si
Definition substâncias voláteis dadas a uma pessoa desmaiada para fazer com que ela acorde refere-se à terceira pessoa, indica reflexividade e é usado após preposição (a, de, em, contra, sobre, por, etc., exceto com)

Where the spellings diverge

Shared letters are muted; the letters that actually set sais and si apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

4 ch
sais
2 ch
si

Spelling & Dictionary Insight

sais and si form a confusable pair in the Portuguese index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 2 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 11632, derived from the frequency rank of both members and their visual similarity.

sais is recorded at frequency rank #11,150, classified as anoun. si is at rank #482, tagged as apron, pronounced /ˈsi/.

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 11632, this pair ranks #61,178 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Frequency comparison

sais#11,150
si#482

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "sais" and "si" be used interchangeably?
No, "sais" and "si" have distinct meanings and cannot be swapped without changing the meaning of a sentence. Understanding the specific definition and context for each word is essential for correct usage.

Remembering sais vs si

The fastest way to pick the right one every time.

  • Check the role first: if you need a noun, it's “sais”; for a pronoun, it's “si”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “sais” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list