Etymology and origin of the French word bai
- Confidence
- Established
- Formation
- Inherited
- First attested
- c. 1165 More words from the 12th century
- Inherited from
- Latin badius via Old French
- Ultimate origin
- Latin badius
Pronunciation
- /bɛ/[1]
Forms
bai (feminine baie, masculine plural bais, feminine plural baies)[1]
Etymology
It is inherited from Old French bai, inherited from Latin badius (“chestnut-brown (of horses)”).[2][3][4][1] The Latin word was a technical term for the coat of a reddish-brown horse.[2] Rey notes that its only known counterpart is Celtic, in Irish buide (“yellow”), and perhaps in the Gaulish people name Badiocasses;[2] Etymonline gives the Irish word as Old Irish.[5]
Cognate with Occitan bai, Spanish bayo and Italian baio, the Italian word being probably a borrowing.[6][3] There was also a Medieval Latin form baiardus, the source of the name of Bayard, the horse of Renaud, son of Aymon.[6]
Earliest recorded meaning
It is first recorded about 1165, describing the coat of a reddish-brown horse;[2] in Raoul de Cambrai a count spurs his destrier bai.[6] The Anglo-Norman word is recorded in 1167–1168.[7]
Semantic evolution
By metonymy the adjective soon named a horse of this colour (about 1170).[2] The colour word stayed tied to horses, with many shades named in the 19th century (bai clair, bai cerise, bai châtain, bai brun).[6] Rarely and in literary use it describes things of the same colour.[8]
English took the word as bay “reddish-brown” in the mid-14th century, from Anglo-French and Old French bai.[5]
Timeline
- c. 1165 – First recorded as the colour of a horse's coat.[2]
- 1167–1168 – Recorded in Anglo-Norman.[7]
- c. 1170 – Used as a noun for a horse of this colour.[2]
- 13th century – Berte puts its heroine on a palefroy bai.[6]
- Mid-14th century – English borrows it as bay.[5]
- 16th century – Ambroise Paré describes the unicorn as de bay obscur.[6]
Meanings
Adjective
- Of a horse: having a reddish-brown coat, with the mane, tail and lower legs black; bay.[8][9][10]
- (rare, literary) Of a thing: of this reddish-brown colour.[8]
- Bolet bai: an edible bolete of this colour.[10]
Noun
Related words
Usage notes
Names of shades are used as invariable adjectives: des chevaux bai clair, bai foncé.[6] Its homophones include baie and bey.[10][11]
References
- ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
- ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
- ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
- ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c d e f g Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
- ^ a b Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
- ^ a b c 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
- ^ a b c Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
- ^ a b c Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
- ^ a b c Dictionnaire de français Larousse, larousse.fr/dictionnaires/francais (accessed 2024)
Related etymologies
Cite this entry
“Bai.” Etymologically, 14 Nov. 2026, etymologically.com/fr/bai. Accessed 15 Nov. 2026.
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