Etymologically

Etymology and origin of the French word mœurs

Confidence
Established
Formation
Inherited
First attested
c. 1112 Benedeit, Voyage of Saint Brendan More words from the 12th century
Inherited from
Latin mores
Ultimate origin
Latin mōs

Pronunciation

Forms

mœurs f pl (plural only)[1] Old French murs (about 1112), mors (about 1155) and meurs (13th century); mœurs from the 14th century.[2][3] Anglo-Norman also had moers, mours and morz.[4]

Etymology

It is inherited from Latin mōrēs (“ways, character, morals”), the plural of mōs.[5][6][7][1] In Latin the noun was a way of acting fixed by custom rather than by law, and also meant “character”; through written Latin the word owes part of its senses to Ancient Greek ἦθος (êthos).[6][7][8] The Latin noun was masculine;[6][7] French made it feminine, though it is found as a masculine again in the 16th century.[6][7]

Among the Romance languages it passed only into French and Old Occitan mors.[6][8] Rey notes that the Latin word may be Indo-European but has a counterpart only in Irish.[6]

Earliest recorded meaning

It first appears early in the 12th century in Benedeit's Voyage of Saint Brendan, meaning a way of behaving, conduct judged as good or bad: Murs out bons cil ermite e sainte vitte “those hermits had good ways and a holy life”.[5]

Semantic evolution

The first sense was conduct seen in the light of good and evil, in bones mors (1155) and mals murs (about 1175), whence bonnes and mauvaises mœurs;[5][6] avoir des mœurs meant “to have good morals” from 1718.[5][6] A more neutral sense, the habits and way of life of a group, appears about 1265 in les meurs et les us, was applied to whole peoples from 1549 and, in classical usage, to good manners (1688).[5][6]

From the 16th century the word was used of the habits of animal species, and in 18th-century criticism of what suits the characters, times and places shown in a literary work (1701).[6] Police des mœurs (1890), the vice squad dealing with prostitution, gave the elliptical les mœurs (1876).[6] English borrowed the word as moeurs by 1922.[9]

Timeline

  • c. 1112 – Murs appears in the Voyage of Saint Brendan.[2][5]
  • 1155 – Wace writes bones mors “good morals”.[5][6]
  • c. 1265 – Brunetto Latini uses les meurs et les us for customs and ways of life.[5]
  • 14th century – The spelling mœurs appears.[2][3]
  • 1549 – Du Bellay applies it to the customs of a people.[5]
  • 1688 – La Bruyère uses sans mœurs “without manners”.[5][6]
  • 1718 – The Académie records avoir des mœurs “to have good morals”.[5]
  • 1876 – Les mœurs for the vice police is found in Huysmans.[6]
  • 1890 – Police des mœurs is recorded.[6]

Meanings

Noun

  1. Habits of a society or a person judged in relation to good and evil, morals: bonnes mœurs, mauvaises mœurs.[8][10]
  2. (law) Bonnes mœurs: the rules imposed by social morality, as in outrage aux bonnes mœurs.[8][10]
  3. Police des mœurs, or les Mœurs: the vice squad.[10][11][1]
  4. The customs and way of life of a people, a society or an age: autres temps, autres mœurs.[11][10][1]
  5. The habits of an animal species: les mœurs des fourmis.[11]
  6. Comédie de mœurs, peinture de mœurs: a work describing the ways of a society.[10]

Usage notes

The final -s was traditionally silent; the pronunciation /mœʁs/, frowned on in careful speech but now common, comes from the spelling, helped by the word's lasting contact with written Latin.[6][7][12] The word is used only in the plural.[1][8]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  3. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  5. ^ a b c d e f g h i j k Trésor de la langue française informatisé (2004), ATILF – CNRS & Université de Lorraine, atilf.fr/tlfi; electronic version of Imbs, Paul; Quemada, Bernard, eds. (1971–1994), Trésor de la langue française, Paris: CNRS / Gallimard
  6. ^ a b c d e f g h i j k l m n o p Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  7. ^ a b c d e Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  8. ^ a b c d e Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  10. ^ a b c d e Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)
  11. ^ a b c Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)
  12. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette

Related etymologies

Cite this entry

“Mœurs.” Etymologically, 11 Nov. 2026, etymologically.com/fr/m%C5%93urs. Accessed 12 Nov. 2026.

Last edited on . ·