Etymologically

Etymology and origin of the French word affilier

Confidence
Established
Formation
Borrowing
First attested
1300s L'Arbre des batailles More words from the 13th century
Borrowed from
Latin affilio
Ultimate origin
Latin fīlius

Pronunciation

Forms

affilier[1]

Etymology

It is borrowed from Medieval Latin affiliō (“to adopt as a son”), a legal term,[2][3][4] formed from ad- and Latin fīlius (“son”).[3][1] The Medieval Latin verb is found as early as 984.[2]

Littré compares Old Occitan afilhar, Catalan afillar and Spanish ahijar, and thought from them that the French word was older than its records.[5]

Earliest recorded meaning

It is first found in the 14th century, in L'Arbre des batailles, meaning “to adopt as a son”: the pope could give Queen Joan the power to have affilié le roy Loys “adopted King Louis” as her son.[2][6]

Semantic evolution

The Trévoux dictionary of 1752 already called this sense old.[2] In 1701 Furetière records a religious sense, to make someone a sharer in all that is holy in a religious order, where the idea of sonship is still felt.[2][3][7] In 1762 the Académie has the reflexive of one society taking on a similar one as a daughter, with the example of the Académie française and provincial academies.[2]

The modern sense, to admit as a member of a group, dates from the 18th century (1732 in Bloch and Wartburg and the Petit Robert) and spread during the Revolution, with the reflexive “to join” from 1791.[3][4][8] The Académie records this reflexive in 1798.[2]

Timeline

  • 984 – The Medieval Latin verb is recorded.[2]
  • 14th century – L'Arbre des batailles uses it for “to adopt as a son”.[2][6]
  • 1701 – Furetière records the religious sense.[2][3]
  • 1732 – The broader modern sense is dated.[4][8]
  • 1752 – The Trévoux dictionary calls the sense “adopt” old.[2]
  • 1762 – The Académie records the reflexive of a society taking on another.[2]
  • 1791 – The reflexive “to join” is in use.[3]
  • 1798 – The Académie records the reflexive “to join”.[2]

Meanings

Verb

  1. To bring (a group) into a larger association, to attach it to a parent society, mostly in the past participle affilié.[8][6]
  2. To admit (someone) as a member of an organization, to enroll.[8][2]
  3. (reflexive) To join a party, union or other group.[8][6]
  4. (obsolete) To adopt as a son.[2][3]

Word family

  • affilié

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o 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
  3. ^ a b c d e f g Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b c Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  6. ^ a b c d Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  8. ^ a b c d e Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Affilier.” Etymologically, 15 Nov. 2026, etymologically.com/fr/affilier. Accessed 15 Nov. 2026.

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