Which to use
“si” is a pronoun and “skin” is a noun - they look or sound alike but fill different roles in a sentence.
- #482
- “si” frequency rank
- #18,716
- “skin” frequency rank
- 19198
- confusion score
Side-by-Side Comparison
| Feature | si | skin |
|---|---|---|
| Definition | refere-se à terceira pessoa, indica reflexividade e é usado após preposição (a, de, em, contra, sobre, por, etc., exceto com) | pele |
Where the eye mixes si and skin
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between si and skin
These two trip readers on the page rather than in the ear: si is /ˈsi/ while skin is /ˈskin/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 19198, derived from the frequency rank of both members and their visual similarity.
si is recorded at frequency rank #482, classified as apron, pronounced /ˈsi/. skin is at rank #18,716, tagged as anoun, pronounced /ˈskin/.
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 19198, this pair ranks #51,597 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of si vs skin
Shared letters: is. Private to "si": -. Private to "skin": kn.
"si" · 2 letters · shape CV · "skin" · 4 letters · shape CCVC
Known mistypes of this pair
- skin ← ksin · sikn · skinn · skkin · skni · sskin
Frequently Asked Questions
Can "si" and "skin" be used interchangeably?
Frequency check: "si" vs "skin" - which ranks higher?
After this comparison
Eye-level mix-up between "si" and "skin" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "si" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "skin" - compare definitions side by side with the headword page. Word entry
- This pair ranks #51,597 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "si" and "skin" also get mixed up with nearby pairs, the highest-scored neighbour is "skin 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 #51,597 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.