CPIvsCSRTell them apart

Which to use

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

#20,409
“CPI” frequency rank
#45,537
“CSR” frequency rank
65946
confusion score

Side-by-Side Comparison

Feature CPI CSR
Definition Synonyme de Cour pénale internationale. Demande de signature de certificat : message envoyé à partir d'un demandeur à une autorité de certification afin de demander un certificat d'identité numérique.

Where the eye mixes CPI and CSR

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. CPI (CCV) and CSR (CCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
CPI
3 ch
CSR

Why the eye confuses CPI with CSR

A purely visual mix-up. CPI (\se.pe.i\) and CSR (\se.ɛs.ɛʁ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 65946, derived from the frequency rank of both members and their visual similarity.

CPI is recorded at frequency rank #20,409, classified as anoun, pronounced \se.pe.i\. CSR is at rank #45,537, tagged as anoun, pronounced \se.ɛs.ɛʁ\.

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 65946, this pair ranks #70,046 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of CPI vs CSR

Shared letters: c. Private to "CPI": ip. Private to "CSR": rs.

"CPI" · 3 letters · shape CCV  ·  "CSR" · 3 letters · shape CCC

Frequently Asked Questions

Is swapping "CPI" for "CSR" ever safe?
No. They are said differently (\se.pe.i\ versus \se.ɛs.ɛʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "CPI" or "CSR" show up more?
"CPI" is the more common of the two: it sits at frequency rank #20,409 in our French list, against #45,537 for "CSR". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "CPI" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "CSR" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #70,046 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "CPI" and "CSR" also get mixed up with nearby pairs, the highest-scored neighbour is "ciro vs CSR". Nearby pair

Confusion rank #70,046 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