Which to use
“casier” is a noun and “casser” is a verb - they look or sound alike but fill different roles in a sentence.
- #11,010
- “casier” frequency rank
- #3,388
- “casser” frequency rank
- 14398
- confusion score
Side-by-Side Comparison
| Feature | casier | casser |
|---|---|---|
| Definition | Nasse pour prendre, selon la taille de l’ouverture, les gros crustacés ou les crevettes. | Briser ; rompre. |
Where the eye mixes casier and casser
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. casier (CVCVVC) and casser (CVCCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between casier and casser
These two trip readers on the page rather than in the ear: casier is \kɑ.zje\ while casser is \ka.se\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - i in “casier” becomes s in “casser”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 14398, derived from the frequency rank of both members and their visual similarity.
casier is recorded at frequency rank #11,010, classified as anoun, pronounced \kɑ.zje\. casser is at rank #3,388, tagged as averb, pronounced \ka.se\.
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 14398, this pair ranks #396,862 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of casier vs casser
Shared letters: acers. Private to "casier": i. Private to "casser": -.
"casier" · 6 letters · shape CVCVVC · "casser" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "casier" and "casser" be used interchangeably?
Frequency check: "casier" vs "casser" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "casier" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "casser" - compare definitions side by side with the headword page. Word entry
- This pair ranks #396,862 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "casier" and "casser" also get mixed up with nearby pairs, the highest-scored neighbour is "casier vs casseur". 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 #396,862 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.