Which to use
“sein” and “sir” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #746
- “sein” frequency rank
- #5,610
- “sir” frequency rank
- 6356
- confusion score
Side-by-Side Comparison
| Feature | sein | sir |
|---|---|---|
| Definition | Partie antérieure du thorax humain, où se trouvent les mamelles. | Titre pour un chevalier, placé devant son prénom avec ou sans son nom de famille, mais non pas devant seulement son nom de famille. |
Where the eye mixes sein and sir
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: sein vs sir
A purely visual mix-up. sein (\sɛ̃\) and sir (\ˈsɝ\) 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 6356, derived from the frequency rank of both members and their visual similarity.
sein is recorded at frequency rank #746, classified as anoun, pronounced \sɛ̃\. sir is at rank #5,610, tagged as anoun, pronounced \ˈsɝ\.
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 6356, this pair ranks #426,469 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sein vs sir
Shared letters: is. Private to "sein": en. Private to "sir": r.
"sein" · 4 letters · shape CVVC · "sir" · 3 letters · shape CVC
Known mistypes of this pair
- sein ← esin · seinn · seni · ssein
Frequently Asked Questions
Is swapping "sein" for "sir" ever safe?
In ordinary French text, does "sein" or "sir" show up more?
Useful next steps
Eye-level mix-up between "sein" and "sir" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sein" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sir" - compare definitions side by side with the headword page. Word entry
- This pair ranks #426,469 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sein" and "sir" also get mixed up with nearby pairs, the highest-scored neighbour is "sir vs suu". 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 #426,469 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.