Etymologically

Etymology and origin of the French word oignon

Confidence
Established
Formation
Inherited
First attested
c. 1190 Old French glossary More words from the 12th century
Inherited from
Latin unio via Old French
Ultimate origin
Latin ūniō
Etymology tree
inherited borrowed derived
Latin ūnus
Aromanian un
French un
Italian un
Italian uno
Romanian un
Romanian unu
Spanish uno
Latin ūniō
French oignon
Romanian uni
French réunion
German Union
Italian unire
Spanish unir
From the same root
Latin adūnō ← ūnus
Latin noenum ← ūnus
Latin ūllus ← ūnus
Latin ūna ← ūnus
Latin ūnanimus ← ūnus
Latin ūncia ← ūnus
Latin ūndecim ← ūnus
Latin ūndēvīgintī ← ūnus
Latin ūni- ← ūnus
Latin ūnicornis ← ūnus
Latin ūnicus ← ūnus
Latin ūnilaterālis ← ūnus
Latin ūnisonus ← ūnus
Latin ūnitās ← ūnus
Latin ūniter ← ūnus
Latin ūniversus ← ūnus
Latin ūnusquisque ← ūnus
Italian ognuno ← uno
Italian qualcuno ← uno
Romanian niciun ← un
Romanian unul ← unu
Latin reūniō ← ūniō
Italian unito ← unire
Spanish reunir ← unir

Pronunciation

Forms

oignon m (plural oignons)[1] Old French unniun (about 1190), hunion (about 1200), oingnun (1260), ognon (1275); oignon from 1332.[2][3]

Etymology

It is inherited from Old French unniun, inherited from Latin ūniō (“a kind of onion without cloves”) (accusative ūniōnem).[4][2][5][1][6] In Latin it was a dialect word, given by Columella, beside the usual caepa, the source of cive.[4][2][5] In imperial Latin the word meant chiefly a large pearl, and it is linked with ūnus (“one”) because the onion, unlike garlic, has a single bulb;[4][2][5] Rey notes that this may be a popular etymology.[4][2][5] The unstressed /u/ developed as in Old French jostise from justitia.[5]

The Latin word also passed into Germanic, giving Old English ynne, later replaced by English onion, which came from French through Anglo-Norman.[2] Most other Romance languages use descendants of Late Latin caepulla, such as Italian cipolla and Spanish cebolla.[5]

Earliest recorded meaning

An Old French glossary of about 1190 has unniun, the onion plant.[4][2]

Semantic evolution

Besides the plant and its bulb, from 1538 it named the bulb of other plants,[4][7] and by likeness of shape a painful swelling of the big toe (1611, oignon du pied; 1701), a large old-fashioned pocket watch (1834, in a popular song) and, in slang, the anus (1883).[4][2]

Il y a de l'oignon “there is something fishy” (1595) was still common in 19th-century slang.[2][4] Se mettre en rang d'oignon first meant to join a company where one does not belong (Cotgrave, 1611) and took its modern sense “in a single line” in 1654;[4][2] Rey sets aside the story of a baron d'Oignon who seated the deputies at Blois in 1576 as resting only on a homonymy.[4][2] Later came aux petits oignons “done with great care” (1855), from slow cooking with small onions, and c'est pas tes oignons (1922) and occupe-toi de tes oignons (1948).[4][2] Popular French clipped it to gnon “a blow” in the 19th century.[5]

Timeline

  • c. 1190 – Unniun in an Old French glossary.[4]
  • 1275 – The form ognon.[2][3]
  • 1332 – The spelling oignon.[2][3]
  • 1538 – Used of the bulb of other plants.[4]
  • 1595 – Il y a de l'oignon “there is trouble afoot”.[4][2]
  • 1611 – Cotgrave records se mettre en rang d'oignon and oignon du pied.[4]
  • 1654 – En rang d'oignons “in a row” in Scarron.[4][2]
  • 1834 – A popular song uses it for a pocket watch.[4]
  • 1855 – Aux petits oignons is recorded.[4][2]
  • 1922 – C'est pas tes oignons.[4]

Meanings

Noun

  1. The onion (Allium cepa), a garden plant with a strong-smelling edible bulb.[8][9][1]
  2. The bulb of this plant, used in cooking: soupe à l'oignon.[8][7]
  3. The bulb of certain other plants, such as the tulip or lily.[4][8][1]
  4. A painful bunion on the foot.[4][8]
  5. (dated, familiar) A large, thick pocket watch.[4][8]
  6. (in the plural, familiar) One's own business: occupe-toi de tes oignons, c'est pas tes oignons.[4][1]
  7. En rang d'oignons: in a single line, side by side.[8][2]
  8. Aux petits oignons: prepared with great care, perfect.[4][2][1]

Word family

  • oignonnade
  • oignonet
  • oignonière
  • gnon

Usage notes

The ⟨i⟩ of oignon is silent;[9] Littré noted that some wrote ognon.[9] Wiktionary also records a spelling pronunciation /wa.ɲɔ̃/.[1]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r s Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ a b c Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x 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
  5. ^ a b c d e f g Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  6. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 14, 43b
  7. ^ a b Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  8. ^ a b c d e f Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ a b c Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette

Related etymologies

Cite this entry

“Oignon.” Etymologically, 11 Nov. 2026, etymologically.com/fr/oignon. Accessed 12 Nov. 2026.

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