Which to use
“sinon” is a conjunction and “sinus” is a noun - they look or sound alike but fill different roles in a sentence.
- #640
- “sinon” frequency rank
- #26,185
- “sinus” frequency rank
- 26825
- confusion score
Side-by-Side Comparison
| Feature | sinon | sinus |
|---|---|---|
| Definition | Si ce n’est : si ce qui est énoncé est faux, alors. | Formation anatomique creuse, liquidienne ou pneumatique. |
Where the eye mixes sinon and sinus
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between sinon and sinus
These two trip readers on the page rather than in the ear: sinon is \si.nɔ̃\ while sinus is \si.nys\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (conjunction vs noun), which is usually the fastest check. Our composite confusion score for this pair is 26825, derived from the frequency rank of both members and their visual similarity.
sinon is recorded at frequency rank #640, classified as aconj, pronounced \si.nɔ̃\. sinus is at rank #26,185, tagged as anoun, pronounced \si.nys\.
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 26825, this pair ranks #332,632 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sinon vs sinus
Shared letters: ins. Private to "sinon": o. Private to "sinus": u.
"sinon" · 5 letters · shape CVCVC · "sinus" · 5 letters · shape CVCVC
Known mistypes of this pair
Frequently Asked Questions
Can "sinon" and "sinus" be used interchangeably?
In ordinary French text, does "sinon" or "sinus" show up more?
Useful next steps
Eye-level mix-up between "sinon" and "sinus" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sinon" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sinus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #332,632 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sinon" and "sinus" also get mixed up with nearby pairs, the highest-scored neighbour is "sinus vs sires". 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 #332,632 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.