Which to use
“longueur” and “longueurs” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,874
- “longueur” frequency rank
- #11,434
- “longueurs” frequency rank
- 13308
- confusion score
Side-by-Side Comparison
| Feature | longueur | longueurs |
|---|---|---|
| Definition | Étendue d’un objet considéré, dans une seule dimension, d’une de ses extrémités à l’autre. | Pluriel de longueur. |
Same sound, different letters: longueur vs longueurs
Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 8 letters. longueur runs 8 letters (CVCCVVVC) against longueurs's 9 (CVCCVVVCC) - the length gap alone is often enough to separate them once you know to check it.
Same sound, different spelling - longueur / longueurs
This is the hard kind. longueur and longueurs are pronounced identically (\lɔ̃.ɡœʁ\) 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) - “longueur” sits inside “longueurs”. Our composite confusion score for this pair is 13308, derived from the frequency rank of both members and their visual similarity.
longueur is recorded at frequency rank #1,874, classified as anoun, pronounced \lɔ̃.ɡœʁ\. longueurs is at rank #11,434, tagged as anoun, pronounced \lɔ̃.ɡœʁ\.
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 13308, this pair ranks #401,544 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of longueur vs longueurs
Shared letters: eglnoru. Private to "longueur": -. Private to "longueurs": s.
"longueur" · 8 letters · shape CVCCVVVC · "longueurs" · 9 letters · shape CVCCVVVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "longueur" for "longueurs" ever safe?
Frequency check: "longueur" vs "longueurs" - which ranks higher?
Useful next steps
"longueur" and "longueurs" share a sound, keep the gloss open, then jump to the headword or a nearby trap.
- Full dictionary entry for "longueur" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "longueurs" - compare definitions side by side with the headword page. Word entry
- This pair ranks #401,544 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "longueur" and "longueurs" also get mixed up with nearby pairs, the highest-scored neighbour is "longueurs vs loueurs". 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 #401,544 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.