Which to use
“sei” is a verb and “STIB” is a name - they look or sound alike but fill different roles in a sentence.
- #36,154
- “sei” frequency rank
- #48,208
- “STIB” frequency rank
- 84362
- confusion score
Side-by-Side Comparison
| Feature | sei | STIB |
|---|---|---|
| Definition | Deuxième personne du singulier de l’impératif présent de sein. | Entreprise publique responsable du service de transport en commun au sein des communes bruxelloises. |
Where the eye mixes sei and STIB
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. sei runs 3 letters (CVV) against STIB's 4 (CCVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses sei with STIB
These two trip readers on the page rather than in the ear: sei is \zaɪ̯\ while STIB is \stib\. 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 (verb vs name), which is usually the fastest check. Our composite confusion score for this pair is 84362, derived from the frequency rank of both members and their visual similarity.
sei is recorded at frequency rank #36,154, classified as averb, pronounced \zaɪ̯\. STIB is at rank #48,208, tagged as aname, pronounced \stib\.
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 84362, this pair ranks #13,139 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of sei vs STIB
Shared letters: is. Private to "sei": e. Private to "STIB": bt.
"sei" · 3 letters · shape CVV · "STIB" · 4 letters · shape CCVC
Known mistypes of this pair
- STIB ← sitb · sstib · stbi · stibb · sttib · tsib
Frequently Asked Questions
Is swapping "sei" for "STIB" ever safe?
Which is more common, "sei" or "STIB"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sei" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "STIB" - compare definitions side by side with the headword page. Word entry
- This pair ranks #13,139 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sei" and "STIB" also get mixed up with nearby pairs, the highest-scored neighbour is "spi vs STIB". 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 #13,139 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.