longueurvsloueurTell them apart

Which to use

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

#1,874
“longueur” frequency rank
#39,382
“loueur” frequency rank
41256
confusion score

Side-by-Side Comparison

Feature longueur loueur
Definition Étendue d’un objet considéré, dans une seule dimension, d’une de ses extrémités à l’autre. Celui qui donne des louanges. On utilise plutôt le mot louangeur.

Where the eye mixes longueur and loueur

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

8 ch
longueur
6 ch
loueur

Why the eye confuses longueur with loueur

A purely visual mix-up. longueur (\lɔ̃.ɡœʁ\) and loueur (\lwœʁ\) 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 letter(s) in length. Our composite confusion score for this pair is 41256, 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\. loueur is at rank #39,382, tagged as anoun, pronounced \lwœʁ\.

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 41256, this pair ranks #234,419 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of longueur vs loueur

Shared letters: eloru. Private to "longueur": gn. Private to "loueur": -.

"longueur" · 8 letters · shape CVCCVVVC  ·  "loueur" · 6 letters · shape CVVVVC

Known mistypes of this pair

  • longueurllongueur · lnogueur · lognueur · longeuur · longgueur · longueru · longueurr · longuuer
  • loueurlloueur · loeuur · loueru · loueurr · louuer · luoeur · olueur

Frequently Asked Questions

Do "longueur" and "loueur" mean the same thing in a sentence?
No. They are said differently (\lɔ̃.ɡœʁ\ versus \lwœʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "longueur" vs "loueur" - which ranks higher?
"longueur" is the more common of the two: it sits at frequency rank #1,874 in our French list, against #39,382 for "loueur". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "longueur" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "loueur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #234,419 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "longueur" and "loueur" also get mixed up with nearby pairs, the highest-scored neighbour is "loueur 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 #234,419 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