Etymologically

Etymology and origin of the French word jeun

Confidence
Established
Formation
Inherited
First attested
1174 Guernes de Pont-Sainte-Maxence, Saint Thomas More words from the 12th century
Inherited from
Latin ieiunus via Old French
Ultimate origin
Latin iēiūnus
Etymology tree
inherited borrowed derived
Latin iēiūnus
French jeun
Italian digiuno
English jejune
From the same root
Latin ieiūnium ← iēiūnus
Latin ieiūnō ← iēiūnus

Pronunciation

Forms

jeun (invariable)[1] Old French jeün, an adjective until the 16th century;[2][3] Anglo-Norman spellings include jun, geun and juin.[4]

Etymology

It is inherited from Old French jeün (“fasting”), inherited from Latin iēiūnus (“having eaten nothing, fasting”), which also meant “dry, meagre, lacking” figuratively.[5][1][6] The phrase is formed with the preposition à.[5]

The adjective went out of use in the 16th century, probably because its feminine was hard to tell apart from jeune “young”; its masculine then survived only as a noun in that phrase.[7][8]

Cognate with Italian digiuno, Occitan jejun, Catalan dejú, Spanish ayuno and Portuguese jejum.[9]

Earliest recorded meaning

The adjective is recorded in 1174 in Guernes de Pont-Sainte-Maxence's Saint Thomas, meaning fasting, not having eaten; the phrase à jeun follows in 1216 in Guillaume le Clerc's Fergus.[5]

Semantic evolution

In Old and Middle French jeün was a full adjective: the Roman de la Rose speaks of serving someone à saoul et à jeün, full and fasting, and Froissart of soldiers who were tous jeuns.[2] After the adjective disappeared, only the adverbial phrase remained.[7][8]

À jeun came to mean with an empty stomach in general (1552, Rabelais),[10] and in the language of the Catholic Church être à jeun meant keeping the fast before communion, having neither eaten nor drunk since midnight (1690, Furetière).[10][2] From 1846, in George Sand, it is used familiarly of a drinker who has not yet had anything to drink that day.[10][8]

Timeline

  • 1174 – The adjective jeün appears in Guernes de Pont-Sainte-Maxence.[5][8]
  • 1216 – À jeun appears in Guillaume le Clerc's Fergus.[5][8]
  • 1552 – Rabelais uses à jeun for “on an empty stomach”.[10]
  • 16th century – The adjective goes out of use.[3][8]
  • 1690 – Furetière records être à jeun of the fast before communion.[10]
  • 1846 – George Sand uses it of a drinker who has not yet drunk.[10][8]

Meanings

Adverb

  1. À jeun: without having eaten, on an empty stomach: Il faut faire cette analyse à jeun.[11][5]
  2. (Catholicism) Être à jeun: to have neither eaten nor drunk since midnight, before communion.[5][2]
  3. (familiar) Of a heavy drinker: not yet having had a drink, sober.[11][5]

Usage notes

Jeun is used only in the phrase à jeun, which can act as an adverb or an adjective (un estomac à jeun).[5][1]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  3. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  5. ^ 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
  6. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 5, 34a
  7. ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  8. ^ a b c d e f g Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  9. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  10. ^ a b c d e f Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  11. ^ a b Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Jeun.” Etymologically, 14 Nov. 2026, etymologically.com/fr/jeun. Accessed 15 Nov. 2026.

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