Which to use
“sein” and “soi” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #45,601
- “sein” frequency rank
- #38,396
- “soi” frequency rank
- 83997
- confusion score
Side-by-Side Comparison
| Feature | sein | soi |
|---|---|---|
| Definition | Ser, estar. | Segunda persona singular informal en el voseo chileno (vos) del presente de indicativo del verbo ser. |
Where the eye mixes sein and soi
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. sein runs 4 letters (CVVC) against soi's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between sein and soi
A purely visual mix-up. sein ([ˈzaɪ̯n]) and soi ([ˈsoj]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 83997, derived from the frequency rank of both members and their visual similarity.
sein is recorded at frequency rank #45,601, classified as averb, pronounced [ˈzaɪ̯n]. soi is at rank #38,396, tagged as averb, pronounced [ˈsoj].
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 83997, this pair ranks #7,517 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of sein vs soi
Shared letters: is. Private to "sein": en. Private to "soi": o.
"sein" · 4 letters · shape CVVC · "soi" · 3 letters · shape CVV
Known mistypes of this pair
- sein ← esin · seinn · seni · ssein
Frequently Asked Questions
Is swapping "sein" for "soi" ever safe?
Which is more common, "sein" or "soi"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sein" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "soi" - compare definitions side by side with the headword page. Word entry
- This pair ranks #7,517 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "sein" and "soi" also get mixed up with nearby pairs, the highest-scored neighbour is "sei vs sein". 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 #7,517 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.