cahiervscasiersWhat's the difference?

Which to use

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

#5,952
“cahier” frequency rank
#27,718
“casiers” frequency rank
33670
confusion score

Side-by-Side Comparison

Feature cahier casiers
Definition Ensemble de feuilles de papier assemblées par agrafage ou couture et destinées à l’écriture. Pluriel de casier.

Where the eye mixes cahier and casiers

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. cahier runs 6 letters (CVCVVC) against casiers's 7 (CVCVVCC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
cahier
7 ch
casiers

Visual trap between cahier and casiers

A purely visual mix-up. cahier (\ka.je\) and casiers (\ka.zje\) 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 1 letter(s) in length. Our composite confusion score for this pair is 33670, derived from the frequency rank of both members and their visual similarity.

cahier is recorded at frequency rank #5,952, classified as anoun, pronounced \ka.je\. casiers is at rank #27,718, tagged as anoun, pronounced \ka.zje\.

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 33670, this pair ranks #289,086 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of cahier vs casiers

Shared letters: aceir. Private to "cahier": h. Private to "casiers": s.

"cahier" · 6 letters · shape CVCVVC  ·  "casiers" · 7 letters · shape CVCVVCC

Known mistypes of this pair

  • cahier ← achier · caheir · cahhier · cahierr · cahire · caiher · ccahier · chaier
  • casiers ← acsiers · caisers · caseirs · casierrs · casierss · casiesr · casires · cassiers

Frequently Asked Questions

Do "cahier" and "casiers" mean the same thing in a sentence?
No. They are said differently (\ka.je\ versus \ka.zje\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "cahier" or "casiers"?
"cahier" is the more common of the two: it sits at frequency rank #5,952 in our French list, against #27,718 for "casiers". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "cahier" and "casiers" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "cahier" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "casiers" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #289,086 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "cahier" and "casiers" also get mixed up with nearby pairs, the highest-scored neighbour is "caries vs casiers". 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 #289,086 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