seevsseinWhich spelling fits?

Quick tell: see is a noun, sein is a verb, so they fill different roles in a sentence.

Which to use

“see” is a noun and “sein” is a verb - they look or sound alike but fill different roles in a sentence.

#8,391
“see” frequency rank
#43,647
“sein” frequency rank
52038
confusion score

Side-by-Side Comparison

Feature see sein
Definition cê (letra C ou c) ser, estar.

Where the eye mixes see and sein

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
see
4 ch
sein

Visual trap between see and sein

These two trip readers on the page rather than in the ear: see is /ˈseː/ while sein is /zaɪ̯n/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 52038, derived from the frequency rank of both members and their visual similarity.

see is recorded at frequency rank #8,391, classified as anoun, pronounced /ˈseː/. sein is at rank #43,647, tagged as averb, pronounced /zaɪ̯n/.

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 52038, this pair ranks #13,095 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of see vs sein

Shared letters: es. Private to "see": -. Private to "sein": in.

"see" · 3 letters · shape CVV  ·  "sein" · 4 letters · shape CVVC

Known mistypes of this pair

  • seinesin · seinn · seni · sien · ssein

Frequently Asked Questions

Can "see" and "sein" be used interchangeably?
No - they are not even the same part of speech. "see" is a noun and "sein" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "see" or "sein"?
"see" is the more common of the two: it sits at frequency rank #8,391 in our Portuguese list, against #43,647 for "sein". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "see" and "sein" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "see" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sein" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #13,095 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "see" and "sein" 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 #13,095 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