seenvssinWhich spelling fits?

Quick tell: seen is a verb, sin is a pronoun, so they fill different roles in a sentence.

Which to use

“seen” is a verb and “sin” is a pronoun - they look or sound alike but fill different roles in a sentence.

#32,769
“seen” frequency rank
#8,687
“sin” frequency rank
41456
confusion score

Side-by-Side Comparison

Feature seen sin
Definition particípio do verbo see aquilo, aquele

Letter map: seen vs sin

Shared letters muted; letters that set seen and sin apart highlighted. Shared run: 2.

4 ch
seen
3 ch
sin

Role in the sentence - seen and sin

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: seen is averb and sinapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 41456, derived from the frequency rank of both members and their visual similarity.

seen is recorded at frequency rank #32,769, classified as averb, pronounced /siːn/, /si:n/. 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 41456, this pair ranks #24,461 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of seen vs sin

Shared letters: ns. Private to "seen": e. Private to "sin": i.

"seen" · 4 letters · shape CVVC  ·  "sin" · 3 letters · shape CVC

Known mistypes of this pair

  • seenesen · seenn · sene · sseen

Frequently Asked Questions

Is swapping "seen" for "sin" ever safe?
No - they are not even the same part of speech. "seen" is a verb and "sin" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "seen" or "sin"?
"sin" is the more common of the two: it sits at frequency rank #8,687 in our Portuguese list, against #32,769 for "seen". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "seen" vs "sin" is on the table, pick a follow-up below.

  • Full dictionary entry for "seen" 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 #24,461 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "seen" and "sin" also get mixed up with nearby pairs, the highest-scored neighbour is "seen vs sueño". 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 #24,461 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list