Which to use
“sei” is an intj and “sex” is a noun - they look or sound alike but fill different roles in a sentence.
- #118
- “sei” frequency rank
- #7,835
- “sex” frequency rank
- 7953
- confusion score
Side-by-Side Comparison
| Feature | sei | sex |
|---|---|---|
| Definition | expressa que aquilo ouvido que foi dito ou afirmado por alguém não é tomado como sendo a verdade | sexo, gênero |
Letter map: sei vs sex
Shared letters muted; letters that set sei and sex apart highlighted. Shared run: 2.
Grammar separator: sei vs sex
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sei is anintj and sexanoun. On the page they differ by a single letter - i in “sei” becomes x in “sex”. Our composite confusion score for this pair is 7953, derived from the frequency rank of both members and their visual similarity.
sei is recorded at frequency rank #118, classified as anintj. sex is at rank #7,835, tagged as anoun, pronounced /sɛks/.
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 7953, this pair ranks #66,008 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sei vs sex
Shared letters: es. Private to "sei": i. Private to "sex": x.
"sei" · 3 letters · shape CVV · "sex" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "sei" for "sex" ever safe?
Which is more common, "sei" or "sex"?
After this comparison
Pair "sei" vs "sex" is on the table, pick a follow-up below.
- Full dictionary entry for "sei" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sex" - compare definitions side by side with the headword page. Word entry
- This pair ranks #66,008 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "sei" and "sex" also get mixed up with nearby pairs, the highest-scored neighbour is "Sau vs sex". Nearby pair
Confusion rank #66,008 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.