Which to use
“sein” is a verb and “sin” is a pronoun - they look or sound alike but fill different roles in a sentence.
- #43,647
- “sein” frequency rank
- #8,687
- “sin” frequency rank
- 52334
- confusion score
Side-by-Side Comparison
| Feature | sein | sin |
|---|---|---|
| Definition | ser, estar. | aquilo, aquele |
Letter map: sein vs sin
Shared letters muted; letters that set sein and sin apart highlighted. Shared run: 3.
Role in the sentence - sein and sin
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sein is averb and sinapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 52334, derived from the frequency rank of both members and their visual similarity.
sein is recorded at frequency rank #43,647, classified as averb, pronounced /zaɪ̯n/. sin is at rank #8,687, tagged as apron.
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 52334, this pair ranks #12,837 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of sein vs sin
Shared letters: ins. Private to "sein": e. Private to "sin": -.
"sein" · 4 letters · shape CVVC · "sin" · 3 letters · shape CVC
Known mistypes of this pair
- sein ← esin · seinn · seni · sien · ssein
Frequently Asked Questions
Is swapping "sein" for "sin" ever safe?
Which is more common, "sein" or "sin"?
After this comparison
Done with this confusable. These links stay specific to "sein" and "sin".
- Full dictionary entry for "sein" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sin" - compare definitions side by side with the headword page. Word entry
- This pair ranks #12,837 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "sein" and "sin" also get mixed up with nearby pairs, the highest-scored neighbour is "sein vs slip". 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 #12,837 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.