saiuvsseuConfusable pair

Quick tell: saiu is a verb, seu is a noun, so they fill different roles in a sentence.

Which to use

“saiu” is a verb and “seu” is a noun - they look or sound alike but fill different roles in a sentence.

#1,035
“saiu” frequency rank
#31
“seu” frequency rank
1066
confusion score

Side-by-Side Comparison

Feature saiu seu
Definition Terceira pessoa do singular do pretérito perfeito do indicativo do verbo sair. senhor

Letter map: saiu vs seu

Shared letters muted; letters that set saiu and seu apart highlighted. Shared run: 2. saiu runs 4 letters (CVVV) against seu's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
saiu
3 ch
seu

Part-of-speech tell for saiu / seu

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: saiu is averb and seuanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 1066, derived from the frequency rank of both members and their visual similarity.

saiu is recorded at frequency rank #1,035, classified as averb. seu is at rank #31, tagged as anoun.

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 1066, this pair ranks #74,566 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of saiu vs seu

Shared letters: su. Private to "saiu": ai. Private to "seu": e.

"saiu" · 4 letters · shape CVVV  ·  "seu" · 3 letters · shape CVV

Known mistypes of this pair

  • saiu ← asiu · saui · siau · ssaiu

Frequently Asked Questions

Is swapping "saiu" for "seu" ever safe?
No - they are not even the same part of speech. "saiu" is a verb and "seu" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "saiu" vs "seu" - which ranks higher?
"seu" is the more common of the two: it sits at frequency rank #31 in our Portuguese list, against #1,035 for "saiu". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "saiu" and "seu". Here's where to go from here.

  • Full dictionary entry for "saiu" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "seu" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #74,566 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "saiu" and "seu" also get mixed up with nearby pairs, the highest-scored neighbour is "saiu 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 #74,566 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