Which to use
“sie” is a pronoun and “su” is an adjective - they look or sound alike but fill different roles in a sentence.
- #40,788
- “sie” frequency rank
- #6,713
- “su” frequency rank
- 47501
- confusion score
Side-by-Side Comparison
| Feature | sie | su |
|---|---|---|
| Definition | ela, pronome pessoal feminino do caso nominativo da terceira pessoa do singular: | dele |
Letter map: sie vs su
Shared letters muted; letters that set sie and su apart highlighted. Shared run: 1.
Grammar separator: sie vs su
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sie is apronoun and suanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 47501, derived from the frequency rank of both members and their visual similarity.
sie is recorded at frequency rank #40,788, classified as apron, pronounced /zi:/ ouvir^(fonte ?) ouvir^(fonte ?). su is at rank #6,713, tagged as anadj.
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 47501, this pair ranks #17,737 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of sie vs su
Shared letters: s. Private to "sie": ei. Private to "su": u.
"sie" · 3 letters · shape CVV · "su" · 2 letters · shape CV
Frequently Asked Questions
Can "sie" and "su" be used interchangeably?
Frequency check: "sie" vs "su" - which ranks higher?
Useful next steps
Done with this confusable. These links stay specific to "sie" and "su".
- Full dictionary entry for "sie" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "su" - compare definitions side by side with the headword page. Word entry
- This pair ranks #17,737 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "sie" and "su" also get mixed up with nearby pairs, the highest-scored neighbour is "Sau vs sie". Nearby pair
Confusion rank #17,737 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.