sai vs se, What's the Difference?

Which to use

“sai” is an intj and “se” is a conjunction - they look or sound alike but fill different roles in a sentence.

#998
“sai” frequency rank: #16
“se” frequency rank: 1014
confusion score

Side-by-Side Comparison

Feature	sai	se
Definition	expressão que comunica que se deseja que se afaste, que deixe em paz	indica hipótese

Letter map: sai vs se

Shared letters muted; letters that set sai and se apart highlighted. Shared run: 1.

3 ch

sai

2 ch

Role in the sentence - sai and se

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sai is anintj and seaconjunction. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 1014, derived from the frequency rank of both members and their visual similarity.

sai is recorded at frequency rank #998, classified as anintj. se is at rank #16, tagged as aconj, pronounced /sɨ/.

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 1014, this pair ranks #74,619 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sai vs se

Shared letters: s. Private to "sai": ai. Private to "se": e.

"sai" · 3 letters · shape CVV · "se" · 2 letters · shape CV

Frequently Asked Questions

Do "sai" and "se" mean the same thing in a sentence?

No - they are not even the same part of speech. "sai" is an intj and "se" a conjunction, so a sentence built for one is usually ungrammatical with the other.

In ordinary Portuguese text, does "sai" or "se" show up more?

"se" is the more common of the two: it sits at frequency rank #16 in our Portuguese list, against #998 for "sai". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "sai" and "se". Here's where to go from here.

Full dictionary entry for "sai" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "se" - compare definitions side by side with the headword page. Word entry
This pair ranks #74,619 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"sai" and "se" also get mixed up with nearby pairs, the highest-scored neighbour is "sai vs soap". Nearby pair

Confusion rank #74,619 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.