sairvsseisWhich spelling fits?

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

Which to use

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

#290
“sair” frequency rank
#542
“seis” frequency rank
832
confusion score

Side-by-Side Comparison

Feature sair seis
Definition passar de dentro para fora; deixar número equivalente a cinco mais um; cardinalidade de um conjunto que contenha seis elementos distintos; representado pelo símbolo 6 (algarismos arábicos) ou VI (algarismos romanos)

Letter map: sair vs seis

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

4 ch
sair
4 ch
seis

Grammar separator: sair vs seis

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sair is averb and seisanum. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 832, 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/. seis is at rank #542, tagged as anum.

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 832, this pair ranks #74,803 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sair vs seis

Shared letters: is. Private to "sair": ar. Private to "seis": e.

"sair" · 4 letters · shape CVVC  ·  "seis" · 4 letters · shape CVVC

Known mistypes of this pair

  • sairasir · sairr · sari · siar · ssair
  • seisesis · seiss · sesi · sies · sseis

Frequently Asked Questions

Can "sair" and "seis" be used interchangeably?
No - they are not even the same part of speech. "sair" is a verb and "seis" a num, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "sair" or "seis" show up more?
"sair" is the more common of the two: it sits at frequency rank #290 in our Portuguese list, against #542 for "seis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "sair" vs "seis" 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 "seis" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #74,803 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sair" and "seis" also get mixed up with nearby pairs, the highest-scored neighbour is "sair 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 #74,803 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