mœursvsmûresWhat's the difference?

Quick tell: mœurs is a noun, mûres is an adjective, so they fill different roles in a sentence.

Which to use

“mœurs” is a noun and “mûres” is an adjective - they look or sound alike but fill different roles in a sentence.

#10,361
“mœurs” frequency rank
#25,411
“mûres” frequency rank
35772
confusion score

Side-by-Side Comparison

Feature mœurs mûres
Definition Habitudes, naturelles ou acquises, relatives à la pratique du bien ou du mal au sens de la morale. Féminin pluriel de mûr.

Where the eye mixes mœurs and mûres

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
mœurs
5 ch
mûres

Look-alike desk: mœurs vs mûres

These two trip readers on the page rather than in the ear: mœurs is \mœʁ\ while mûres is \myʁ\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 35772, derived from the frequency rank of both members and their visual similarity.

mœurs is recorded at frequency rank #10,361, classified as anoun, pronounced \mœʁ\. mûres is at rank #25,411, tagged as anadj, pronounced \myʁ\.

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 35772, this pair ranks #274,346 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mœurs vs mûres

Shared letters: mrs. Private to "mœurs": . Private to "mûres": .

"mœurs" · 5 letters · shape CVVCC  ·  "mûres" · 5 letters · shape CVCVC

Frequently Asked Questions

Do "mœurs" and "mûres" mean the same thing in a sentence?
No - they are not even the same part of speech. "mœurs" is a noun and "mûres" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "mœurs" vs "mûres" - which ranks higher?
"mœurs" is the more common of the two: it sits at frequency rank #10,361 in our French list, against #25,411 for "mûres". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "mœurs" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mûres" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #274,346 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "mœurs" and "mûres" also get mixed up with nearby pairs, the highest-scored neighbour is "muer vs mûres". Nearby pair

Confusion rank #274,346 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