Which to use
“cai” and “csi” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #46,045
- “cai” frequency rank
- #30,552
- “csi” frequency rank
- 76597
- confusion score
Side-by-Side Comparison
| Feature | cai | csi |
|---|---|---|
| Definition | Bien, affaire, objet, chose, fortune. | Ksi. |
Where the eye mixes cai and csi
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. cai (CVV) and csi (CCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between cai and csi
A purely visual mix-up. cai (\kaj\) and csi (\ˈksi\) 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 a single letter - a in “cai” becomes s in “csi”. Our composite confusion score for this pair is 76597, derived from the frequency rank of both members and their visual similarity.
cai is recorded at frequency rank #46,045, classified as anoun, pronounced \kaj\. csi is at rank #30,552, tagged as anoun, pronounced \ˈksi\.
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 76597, this pair ranks #30,669 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of cai vs csi
Shared letters: ci. Private to "cai": a. Private to "csi": s.
"cai" · 3 letters · shape CVV · "csi" · 3 letters · shape CCV
Frequently Asked Questions
Is swapping "cai" for "csi" ever safe?
Which is more common, "cai" or "csi"?
Useful next steps
Eye-level mix-up between "cai" and "csi" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "cai" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "csi" - compare definitions side by side with the headword page. Word entry
- This pair ranks #30,669 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "cai" and "csi" also get mixed up with nearby pairs, the highest-scored neighbour is "cai vs CCE". Nearby pair
Confusion rank #30,669 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.