caivsCPIWhich spelling fits?

Which to use

“cai” and “CPI” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#46,045
“cai” frequency rank
#20,409
“CPI” frequency rank
66454
confusion score

Side-by-Side Comparison

Feature cai CPI
Definition Bien, affaire, objet, chose, fortune. Synonyme de Cour pénale internationale.

Where the eye mixes cai and CPI

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. cai (CVV) and CPI (CCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
cai
3 ch
CPI

Visual trap between cai and CPI

A purely visual mix-up. cai (\kaj\) and CPI (\se.pe.i\) 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 p in “CPI”. Our composite confusion score for this pair is 66454, 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\. CPI is at rank #20,409, tagged as anoun, pronounced \se.pe.i\.

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 66454, this pair ranks #67,759 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of cai vs CPI

Shared letters: ci. Private to "cai": a. Private to "CPI": p.

"cai" · 3 letters · shape CVV  ·  "CPI" · 3 letters · shape CCV

Frequently Asked Questions

Is swapping "cai" for "CPI" ever safe?
No. They are said differently (\kaj\ versus \se.pe.i\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "cai" or "CPI"?
"CPI" is the more common of the two: it sits at frequency rank #20,409 in our French list, against #46,045 for "cai". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "cai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CPI" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #67,759 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "cai" and "CPI" also get mixed up with nearby pairs, the highest-scored neighbour is "cai vs CCE". Nearby pair

Confusion rank #67,759 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list