Which to use
“sain” is an adjective and “si” is a conjunction - they look or sound alike but fill different roles in a sentence.
- #6,135
- “sain” frequency rank
- #46
- “si” frequency rank
- 6181
- confusion score
Side-by-Side Comparison
| Feature | sain | si |
|---|---|---|
| Definition | Qui est de bonne constitution, qui n’a pas de tares en son organisme. Qui n’est pas altéré, qui est en bon état. | Dans le cas où, à condition que, supposé que. Note d’usage : Conjonction qui introduit une condition (suivie d’une conséquence) ou une supposition qui peut être supprimée en utilisant un conditionnel. |
Where the eye mixes sain and si
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between sain and si
These two trip readers on the page rather than in the ear: sain is \sɛ̃\ while si is \si\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 6181, derived from the frequency rank of both members and their visual similarity.
sain is recorded at frequency rank #6,135, classified as anadj, pronounced \sɛ̃\. si is at rank #46, tagged as aconj, pronounced \si\.
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 6181, this pair ranks #426,946 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sain vs si
Shared letters: is. Private to "sain": an. Private to "si": -.
"sain" · 4 letters · shape CVVC · "si" · 2 letters · shape CV
Known mistypes of this pair
- sain ← asin · sainn · sani · sian · ssain
Frequently Asked Questions
Do "sain" and "si" mean the same thing in a sentence?
Which is more common, "sain" or "si"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sain" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "si" - compare definitions side by side with the headword page. Word entry
- This pair ranks #426,946 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "sain" and "si" also get mixed up with nearby pairs, the highest-scored neighbour is "sain vs spi". 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 #426,946 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.