Which to use
“casual” is an adjective and “casus” is a noun - they look or sound alike but fill different roles in a sentence.
- #33,161
- “casual” frequency rank
- #48,398
- “casus” frequency rank
- 81559
- confusion score
Side-by-Side Comparison
| Feature | casual | casus |
|---|---|---|
| Definition | Décontracté. | Chute. |
Letter map: casual vs casus
Shared letters muted; letters that set casual and casus apart highlighted. Shared run: 4. casual runs 6 letters (CVCVVC) against casus's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - casual and casus
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: casual is anadjective and casusanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 81559, derived from the frequency rank of both members and their visual similarity.
casual is recorded at frequency rank #33,161, classified as anadj, pronounced \ka.zy.al\. casus is at rank #48,398, tagged as anoun.
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 81559, this pair ranks #18,500 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of casual vs casus
Shared letters: acsu. Private to "casual": l. Private to "casus": -.
"casual" · 6 letters · shape CVCVVC · "casus" · 5 letters · shape CVCVC
Known mistypes of this pair
Frequently Asked Questions
Can "casual" and "casus" be used interchangeably?
Frequency check: "casual" vs "casus" - which ranks higher?
After this comparison
Done with this confusable. These links stay specific to "casual" and "casus".
- Full dictionary entry for "casual" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "casus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #18,500 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "casual" and "casus" also get mixed up with nearby pairs, the highest-scored neighbour is "cakes vs casus". 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 #18,500 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.