Etymologically

complexe

Etymology and origin of the French word complexe

Confidence
Established
Formation
Borrowing
First attested
14th century, Jean Le Fèvre
Borrowed from
Latin complexus
Ultimate origin
Latin (plectō)
Etymology tree
inherited borrowed derived
Latin complexus
French complexe
English complex

Pronunciation

  • IPA: /kɔ̃.plɛks/[1]

Forms

complexe (plural complexes)[1]

Etymology

It is borrowed from Latin complexus (“made of interwoven elements”),[2][3][4][5] the past participle of complector (“to embrace, encompass”), from com- and plectō (“to plait, interweave”).[3][6]

The psychoanalytic sense is a calque of German Komplex, a term first used by the physiologist Josef Breuer (1895) and then by Jung and Freud (“Ödipuskomplex”, 1909–1910).[2][3]

Earliest recorded meaning

Its first use, in Jean Le Fèvre's La Vieille (14th century), is isolated and its sense unclear (Complexion est sans complexe).[2][3]

Semantic evolution

The adjective was taken up in the 16th century for what is made of different elements (complixe querelle, 1564),[2][3] and became a term of logic (vérité complexe, 1652, Bloch and Wartburg date it to 1667) and of mathematics (nombre complexe).[2][4][3] In everyday use it has drawn close to compliqué “complicated”.[3][7]

As a noun meaning “whole, aggregate” it is found in physiology in 1781, and Claudel used it for a group of industries in 1918.[2][3] The psychological sense is recorded in 1906,[8] and spread with Freudian psychoanalysis (complexe d'Œdipe);[3] complexe d'infériorité was in common use by 1930, and faire des complexes “to feel inferior” by 1960.[2][3] The noun complexité dates from 1755.[4]

Timeline

  • 14th century – An isolated use in Le Fèvre.[2]
  • 1564 – Complixe querelle.[2]
  • 1652 – Vérité complexe in logic.[2]
  • 1755 – Complexité.[4][3]
  • 1781 – The noun “aggregate” in physiology.[2]
  • 1906 – A psychic complexe.[8]
  • 1918 – An industrial complexe in Claudel.[2]
  • 1930 – Complexe d'infériorité in Morand.[2]

Meanings

Adjective

  1. Complex, made of several different parts: un problème complexe.[7][9]
  2. Complicated, hard to grasp.[7][10]
  3. (mathematics) Nombre complexe: a complex number, with a real and an imaginary part.[7][9]
  4. (grammar) Phrase complexe: a sentence of several clauses.[10][7]

Noun

  1. (psychology) A complex: complexe d'Œdipe, (familiar) a feeling of inferiority: avoir des complexes.[10][3]
  2. A group of buildings or industries: complexe sportif, complexe industriel.[2][1]
  3. (chemistry) A complex compound.[1]

Word family

  • complexité
  • complexé
  • complexer
  • décomplexer
  • complexifier

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n 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. ^ a b c d Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  5. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 2, 984a
  6. ^ Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  7. ^ a b c d e Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  8. ^ a b Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF
  9. ^ a b Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)
  10. ^ a b c Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)

Borrowed into

Related etymologies

  • vide · also from Latin
  • bail · also from Latin
  • pendre · also from Latin
  • mode · also from Latin
  • ton · also from Latin
  • tube · also from Latin
  • voir · also from Latin
  • fleur · also from Latin
Cite this entry

“Complexe.” Etymologically, 17 Oct. 2026, etymologically.com/fr/complexe. Accessed 17 Oct. 2026.

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