Etymologically

défection

Etymology and origin of the French word défection

Confidence
Established
Formation
Borrowing
First attested
c. 1170 Horn More words from the 12th century
Borrowed from
Latin defectio
Ultimate origin
Latin dēficiō
Etymology tree
inherited borrowed derived
Latin faciō
Aromanian fac
Catalan fer
French faire
Italian fare
Romanian face
Spanish hacer
Latin dēficiō
Latin dēfectiō
English defection
French défection
From the same root
English surfeit ← faciō
French affaire ← faciō
French défaire ← faciō
Latin afficiō ← faciō
Latin assuefacio ← faciō
Latin calefaciō ← faciō
Latin clārificus ← faciō
Latin commonefaciō ← faciō
Latin cōnficiō ← faciō
Latin disfaciō ← faciō
Latin efficiō ← faciō
Latin facessō ← faciō
Latin facibilis ← faciō
Latin facienda ← faciō
Latin faciēs ← faciō
Latin facilis ← faciō
Latin facinus ← faciō
Latin factiō ← faciō
Latin factitō ← faciō
Latin factor ← faciō
Latin factūra ← faciō
Latin factus ← faciō
Latin fortificō ← faciō
Latin frīgefactō ← faciō
Latin īnficiō ← faciō
Latin interficiō ← faciō
Latin iūstificō ← faciō
Latin labefaciō ← faciō
Latin liquefaciō ← faciō
Latin mollificō ← faciō
See all derived words →

Pronunciation

  • /de.fɛk.sjɔ̃/[1]

Forms

défection f (plural défections)[1] Old French defectiun (about 1170).[2][3]

Etymology

It is borrowed from Latin dēfectiō (“defection, desertion”).[2][3][4] In Latin the noun also meant the eclipse of a heavenly body, a ceasing or exhaustion, and weakness, and in grammar an ellipsis.[3] It was formed on the supine of dēficiō (“to fail, desert”), which had the same range of senses.[3][5]

Earliest recorded meaning

The first record is defectiun in the Anglo-Norman romance Horn (about 1170), meaning a failing or weakness, a sense that has since died out.[2][3] The Grand Robert and the GLLF instead give “eclipse” as the oldest sense, the GLLF from the Roman d’Alexandre at the end of the 12th century.[5][6]

Semantic evolution

In the 15th century Commynes used deffection of a lord's defeat and failure.[7][6] The modern sense, the abandoning of a party, an opinion or a cause one was bound to, is recorded by Richelet in 1680.[2][3] The fixed phrase faire défection “to desert, to drop out” belongs to it.[8][9]

By extension the word came to mean failing to turn up where one is expected (before 1850, Balzac).[2][3] The sense “eclipse”, still entered in most general dictionaries of the 19th and 20th centuries and by Littré as a term of astrology, has gone out of use.[3][7]

Timeline

  • c. 1170 – Defectiun appears in Horn in the sense “failing, weakness”.[2][3]
  • 15th century – Commynes uses deffection for a defeat.[7][6]
  • 1680 – Richelet records the sense “abandoning a cause or party”.[2][3]
  • 1843 – The derived adjective défectionnaire “who defects” is recorded.[3]
  • before 1850 – Balzac uses it for not turning up where one is expected.[2][3]

Meanings

Noun

  1. The abandoning of a cause, party or leader one had supported: defection, desertion.[8][9][2] Faire défection: to desert, to drop out.[8][9]
  2. A failure to turn up where one was expected, a no-show: plusieurs défections ont obligé à annuler le dîner.[8][10][9]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i 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 h i j k l Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 3, 28a
  5. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  6. ^ a b c Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  7. ^ a b c Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  8. ^ a b c d Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ a b c d Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)
  10. ^ Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)

Related etymologies

Cite this entry

“Défection.” Etymologically, 15 Nov. 2026, etymologically.com/fr/d%C3%A9fection. Accessed 15 Nov. 2026.

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