Etymologically

accoutumer

Etymology and origin of the French word accoutumer

Confidence
Established
Formation
Derivation
First attested
c. 1160 More words from the 12th century
Ultimate origin
Latin cōnsuētūdō
Etymology tree
inherited borrowed derived
Latin suēscō
Latin cōnsuēscō
French coutume
French accoutumer
Spanish costumbre
English consuetude
From the same root
Latin dēsuēscō ← suēscō
Latin īnsuēscō ← suēscō
Latin mānsuēsco ← suēscō
Latin suētus ← suēscō
Latin cōnsuētus ← cōnsuēscō
Latin cōnsuētūdinārius ← cōnsuētūdō
French coutumier ← coutume
Spanish acostumbrar ← costumbre

Pronunciation

  • /a.ku.ty.me/[1]

Forms

accoutumer[1] Old French acostumer and acustumer, Middle French accoustumer.[1][2][3]

Etymology

It is inherited from Middle French accoustumer, from Old French acostumer,[1] formed from French a- + coutume, and the noun goes back to Latin cōnsuētūdō (“custom, habit”).[4][3][5][6] Littré analyses it the same way.[7]

Cognate with Occitan acostumar, Catalan acostumar, Spanish acostumbrar, Portuguese acostumar and Italian accostumare.[7][1]

Earliest recorded meaning

It is first recorded as acostumer about 1160, in the sense “to get used to something”; the transitive sense “to make someone used to something” follows about 1170.[4][8] The Larousse dates the spelling acustumer to about 1190, in the Livre des Rois.[2]

Semantic evolution

From the 13th century the word was common in legal and narrative prose: Beaumanoir writes of the lawyers who acoustument à pledier before the bailiff (“are used to pleading”), and Joinville has the king ask his sons to make it their habit to wash the feet of the poor.[7] The construction avoir accoutumé de “to be in the habit of” is now archaic or literary.[3][7]

The past participle accoutumé “usual” gave the phrase à l'accoutumée “as usual”.[8] The verb formed a family early: accoutumance (about 1160), désaccoutumer (late 12th century), inaccoutumé (1380) and raccoutumer (1538).[8][5] In modern French it is a more formal synonym of habituer, rare in speech.[9]

English accustom (early 15th century) was borrowed from the Old French verb.[10]

Timeline

  • c. 1160 – Acostumer “to get used to something” is first recorded.[4][8]
  • c. 1160 – The derivative acostomance (modern accoutumance) appears.[8]
  • c. 1170 – The transitive sense “to accustom someone” is recorded.[4][8]
  • c. 1190 – The spelling acustumer is found in the Livre des Rois.[2]
  • Late 12th century – Désaccoutumer is formed.[8][5]
  • 1380 – Inaccoutumé is recorded.[8]
  • Early 15th century – English borrows the Old French verb as accustomen.[10]
  • 1538 – Raccoutumer is recorded.[5]

Meanings

Verb

  1. (transitive) To accustom someone or something to a thing, to make them used to it: accoutumer qqn à qqch., accoutumer un chiot à la laisse.[3][9][1]
  2. (passive) Être accoutumé à: to be used to something or to doing something.[3][2]
  3. (reflexive) S'accoutumer à: to get used to, grow familiar with.[3][1]
  4. (archaic, literary) Avoir accoutumé de faire qqch.: to be in the habit of doing something.[3][7]

Word family

  • accoutumance
  • désaccoutumer
  • inaccoutumé
  • raccoutumer
  • accoutumé

Usage notes

The phrase à l'accoutumée “as usual” keeps the past participle as a feminine noun.[8][1]

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  3. ^ a b c d e f g Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  4. ^ a b c d Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  5. ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  6. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 2, 1091b
  7. ^ a b c d e Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  8. ^ a b c d e f g h i Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  9. ^ a b 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
  10. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Accoutumer.” Etymologically, 14 Nov. 2026, etymologically.com/fr/accoutumer. Accessed 15 Nov. 2026.

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