Which to use
“si” is a pronoun and “sing” is a verb - they look or sound alike but fill different roles in a sentence.
- #482
- “si” frequency rank
- #20,435
- “sing” frequency rank
- 20917
- confusion score
Side-by-Side Comparison
| Feature | si | sing |
|---|---|---|
| Definition | refere-se à terceira pessoa, indica reflexividade e é usado após preposição (a, de, em, contra, sobre, por, etc., exceto com) | cantar |
Letter map: si vs sing
Shared letters muted; letters that set si and sing apart highlighted. Shared run: 2.
Part-of-speech tell for si / sing
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: si is apronoun and singaverb. On the page they differ by 2 extra letter(s) - “si” sits inside “sing”. Our composite confusion score for this pair is 20917, derived from the frequency rank of both members and their visual similarity.
si is recorded at frequency rank #482, classified as apron, pronounced /ˈsi/. sing is at rank #20,435, tagged as averb.
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 20917, this pair ranks #49,485 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of si vs sing
Shared letters: is. Private to "si": -. Private to "sing": gn.
"si" · 2 letters · shape CV · "sing" · 4 letters · shape CVCC
Known mistypes of this pair
- sing ← isng · sign · singg · sinng · snig · ssing
Frequently Asked Questions
Can "si" and "sing" be used interchangeably?
Which is more common, "si" or "sing"?
After this comparison
Pair "si" vs "sing" is on the table, pick a follow-up below.
- Full dictionary entry for "si" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sing" - compare definitions side by side with the headword page. Word entry
- This pair ranks #49,485 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "si" and "sing" also get mixed up with nearby pairs, the highest-scored neighbour is "sing vs sire". 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 #49,485 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.