Which to use
“mousse” is a noun and “mousseux” is an adjective - they look or sound alike but fill different roles in a sentence.
- #8,892
- “mousse” frequency rank
- #32,079
- “mousseux” frequency rank
- 40971
- confusion score
Side-by-Side Comparison
| Feature | mousse | mousseux |
|---|---|---|
| Definition | Plante rase des lieux humides formant des tapis spongieux composés de plusieurs individus. | Qui ressemble à de la mousse. |
Where the eye mixes mousse and mousseux
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. mousse runs 6 letters (CVVCCV) against mousseux's 8 (CVVCCVVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses mousse with mousseux
These two trip readers on the page rather than in the ear: mousse is \mus\ while mousseux is \mu.sø\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “mousse” sits inside “mousseux”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 40971, derived from the frequency rank of both members and their visual similarity.
mousse is recorded at frequency rank #8,892, classified as anoun, pronounced \mus\. mousseux is at rank #32,079, tagged as anadj, pronounced \mu.sø\.
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 40971, this pair ranks #236,564 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of mousse vs mousseux
Shared letters: emosu. Private to "mousse": -. Private to "mousseux": x.
"mousse" · 6 letters · shape CVVCCV · "mousseux" · 8 letters · shape CVVCCVVC
Known mistypes of this pair
Frequently Asked Questions
Do "mousse" and "mousseux" mean the same thing in a sentence?
Which is more common, "mousse" or "mousseux"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "mousse" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "mousseux" - compare definitions side by side with the headword page. Word entry
- This pair ranks #236,564 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "mousse" and "mousseux" also get mixed up with nearby pairs, the highest-scored neighbour is "mousser vs mousseux". 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 #236,564 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.