seat vs sei, What's the Difference?

Which to use

“seat” is a noun and “sei” is an intj - they look or sound alike but fill different roles in a sentence.

#34,459
“seat” frequency rank: #118
“sei” frequency rank: 34577
confusion score

Side-by-Side Comparison

Feature	seat	sei
Definition	cadeira (lugar ocupado por membro de uma corporação)	expressa que aquilo ouvido que foi dito ou afirmado por alguém não é tomado como sendo a verdade

Letter map: seat vs sei

Shared letters muted; letters that set seat and sei apart highlighted. Shared run: 2.

4 ch

seat

3 ch

sei

Part-of-speech tell for seat / sei

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: seat is anoun and seianintj. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 34577, derived from the frequency rank of both members and their visual similarity.

seat is recorded at frequency rank #34,459, classified as anoun, pronounced /siːt/. sei is at rank #118, tagged as anintj.

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 34577, this pair ranks #32,650 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of seat vs sei

Shared letters: es. Private to "seat": at. Private to "sei": i.

"seat" · 4 letters · shape CVVC · "sei" · 3 letters · shape CVV

Known mistypes of this pair

seat ← esat · saet · seatt · sseat

Frequently Asked Questions

Can "seat" and "sei" be used interchangeably?

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

Which is more common, "seat" or "sei"?

"sei" is the more common of the two: it sits at frequency rank #118 in our Portuguese list, against #34,459 for "seat". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pair "seat" vs "sei" is on the table, pick a follow-up below.

Full dictionary entry for "seat" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "sei" - compare definitions side by side with the headword page. Word entry
This pair ranks #32,650 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"seat" and "sei" also get mixed up with nearby pairs, the highest-scored neighbour is "seat vs soap". 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 #32,650 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.