Which to use
“C2” is a noun and “ci” is an adverb - they look or sound alike but fill different roles in a sentence.
- #26,652
- “C2” frequency rank
- #264
- “ci” frequency rank
- 26916
- confusion score
Side-by-Side Comparison
| Feature | C2 | ci |
|---|---|---|
| Definition | Niveau de langue correspondant à un niveau expérimenté (maîtrise) : personne capable de comprendre sans effort pratiquement tout ce qui est lu ou entendu ; pouvoir restituer des faits et des arguments issus de diverses sources écrites et orales en les résumant de façon cohérente ; s’exprimer spontanément, très couramment, de façon précise et rendre distinctes de fines nuances de sens en rapport avec des sujets complexes. | ou (Utilisé uniquement dans les compositions, pas utilisé isolément) Ici. |
Where the eye mixes C2 and ci
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between C2 and ci
These two trip readers on the page rather than in the ear: C2 is \se.dø\ while ci is \si\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - 2 in “C2” becomes i in “ci”, and the parts of speech differ too (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 26916, derived from the frequency rank of both members and their visual similarity.
C2 is recorded at frequency rank #26,652, classified as anoun, pronounced \se.dø\. ci is at rank #264, tagged as anadv, 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 26916, this pair ranks #332,070 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of C2 vs ci
Shared letters: c. Private to "C2": -. Private to "ci": i.
"C2" · 1 letters · shape C · "ci" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "C2" for "ci" ever safe?
In ordinary French text, does "C2" or "ci" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "C2" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ci" - compare definitions side by side with the headword page. Word entry
- This pair ranks #332,070 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "C2" and "ci" also get mixed up with nearby pairs, the highest-scored neighbour is "C2 vs CCE". Nearby pair
Confusion rank #332,070 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.