Which to use
“roseau” and “roseaux” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #36,572
- “roseau” frequency rank
- #33,445
- “roseaux” frequency rank
- 70017
- confusion score
Side-by-Side Comparison
| Feature | roseau | roseaux |
|---|---|---|
| Definition | Nom courant du phragmite (Phragmites australis). | Pluriel de roseau. |
Same sound, different letters: roseau vs roseaux
Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 6 letters. roseau runs 6 letters (CVCVVV) against roseaux's 7 (CVCVVVC) - the length gap alone is often enough to separate them once you know to check it.
Same sound, different spelling - roseau / roseaux
This is the hard kind. roseau and roseaux are pronounced identically (\ʁo.zo\) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by 1 extra letter(s) - “roseau” sits inside “roseaux”. Our composite confusion score for this pair is 70017, derived from the frequency rank of both members and their visual similarity.
roseau is recorded at frequency rank #36,572, classified as anoun, pronounced \ʁo.zo\. roseaux is at rank #33,445, tagged as anoun, pronounced \ʁo.zo\.
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 70017, this pair ranks #52,945 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of roseau vs roseaux
Shared letters: aeorsu. Private to "roseau": -. Private to "roseaux": x.
"roseau" · 6 letters · shape CVCVVV · "roseaux" · 7 letters · shape CVCVVVC
Known mistypes of this pair
Frequently Asked Questions
Can "roseau" and "roseaux" be used interchangeably?
Frequency check: "roseau" vs "roseaux" - which ranks higher?
After this comparison
Sound matches; spelling doesn't. Use the exits below to lock the right form or check a cousin pair.
- Full dictionary entry for "roseau" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "roseaux" - compare definitions side by side with the headword page. Word entry
- This pair ranks #52,945 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "roseau" and "roseaux" also get mixed up with nearby pairs, the highest-scored neighbour is "rondeau vs roseau". 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 #52,945 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.