roussevsrousseurWhich spelling fits?

Which to use

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

#10,066
“rousse” frequency rank
#33,450
“rousseur” frequency rank
43516
confusion score

Side-by-Side Comparison

Feature rousse rousseur
Definition Femme qui a les cheveux roux. Caractère de ce qui est roux.

Where the eye mixes rousse and rousseur

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. rousse runs 6 letters (CVVCCV) against rousseur's 8 (CVVCCVVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
rousse
8 ch
rousseur

Why the eye confuses rousse with rousseur

A purely visual mix-up. rousse (\ʁus\) and rousseur (\ʁu.sœʁ\) 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 2 extra letter(s) - “rousse” sits inside “rousseur”. Our composite confusion score for this pair is 43516, derived from the frequency rank of both members and their visual similarity.

rousse is recorded at frequency rank #10,066, classified as anoun, pronounced \ʁus\. rousseur is at rank #33,450, tagged as anoun, pronounced \ʁu.sœʁ\.

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 43516, this pair ranks #217,461 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of rousse vs rousseur

Shared letters: eorsu. Private to "rousse": -. Private to "rousseur": -.

"rousse" · 6 letters · shape CVVCCV  ·  "rousseur" · 8 letters · shape CVVCCVVC

Known mistypes of this pair

  • rousse ← orusse · rosuse · rouse · rouses · rrousse · ruosse
  • rousseur ← orusseur · rosuseur · rousesur · rouseur · rousseru · rousseurr · roussuer · rrousseur

Frequently Asked Questions

Can "rousse" and "rousseur" be used interchangeably?
No. They are said differently (\ʁus\ versus \ʁu.sœʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "rousse" or "rousseur"?
"rousse" is the more common of the two: it sits at frequency rank #10,066 in our French list, against #33,450 for "rousseur". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "rousse" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "rousseur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #217,461 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "rousse" and "rousseur" also get mixed up with nearby pairs, the highest-scored neighbour is "Rousseff vs rousseur". 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 #217,461 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