Etymologically

qui

Etymology and origin of the French word qui

Confidence
Established
Formation
Inherited
First attested
842, Serments de Strasbourg
Inherited from
Latin qui via Old French
Ultimate origin
Latin (quī)

Pronunciation

  • IPA: /ki/[1]
  • IPA (Louisiana): /ki/[1]
  • IPA (Louisiana): /ti/[1]

Forms

qui m or f[1] Old French oblique (stressed) cui, from Latin cui, used after prepositions until the 13th century; it later merged in spelling with qui.[2][3]

Etymology

It is inherited from Old French qui, inherited from Latin quī (“who, which”), the nominative singular masculine of the relative and interrogative pronoun.[4][3][1] In Late Latin (4th century) “quī” became the form for all three genders, eliminating quae and quod.[3][2] The dative cui, common to all genders, became the oblique case singular and plural in popular Latin, giving Old French cui, soon written “qui”.[3][2] The object form que comes from the accusative quem, and quoi from quid.[2]

The Latin pronoun belongs to an Indo-European stem Proto-Indo-European *kʷo-, with an added particle “-i”; a parallel stem Proto-Indo-European *kʷi- gave the interrogative quis.[3] Cognate with Italian chi and Occitan qui; Gothic 𐌷𐍅𐌰𐍃 (ƕas) is related.[2][5]

Earliest recorded meaning

In the Strasbourg Oaths (842) qui is a relative subject with an antecedent: nul plaid… qui… cist meon fradre Karle in damno sit “no agreement … that may harm this brother of mine Charles”.[6][5]

Semantic evolution

Nearly all the uses of qui are attested before the end of the 12th century.[3] Without an antecedent it meant “whoever” from the second half of the 10th century, often in sayings (qui fai lo bien “whoever does good”), as in modern qui vivra verra.[6][7] Until the 17th century it could also be a neuter interrogative, “what”, as in La Fontaine's Qui fait l'oiseau ?[2] The old separation of qui from its antecedent by several words became rarer, and its elision to qu’ was given up because it was confused with que.[3]

Timeline

  • 842 – Relative qui in the Strasbourg Oaths.[6]
  • 2nd half of 10th century – Qui without antecedent, “whoever”.[6]
  • c. 1050 – Chi… chi “whoever” in the Vie de saint Alexis.[6]
  • 1080 – Qui after a preposition, for a person, in the Chanson de Roland.[8]
  • 13th century – End of the separate oblique form cui.[2]
  • 17th century – Last uses of qui as a neuter interrogative.[2]

Meanings

Pronoun

  1. (relative) who, which, that: subject of a relative clause: les gens qui nous aiment.[7][8]
  2. (relative) Whom: after a preposition, for a person: l'homme à qui je parle.[8]
  3. (relative, without antecedent) Whoever, the one who: qui vivra verra.[7][8]
  4. (interrogative) Who, whom: qui est là ?, à qui est cette maison ?[1][2]

Word family

  • que
  • lequel
  • quoi
  • Latin quī

Usage notes

In Louisiana French qui is also a conjunction meaning “if”, perhaps related to si.[1]

References

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

Related etymologies

Cite this entry

“Qui.” Etymologically, 18 Oct. 2026, etymologically.com/fr/qui. Accessed 18 Oct. 2026.

Last edited on . ·