Etymology and origin of the French word mercredi
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1119 Philippe de Thaon, Comput More words from the 12th century
- Inherited from
- Latin *Mercuris dies via Old French
- Ultimate origin
- Latin Mercuriī diēs
Forms
mercredi m (plural mercredis)[1] Old French mercresdi (1119) and merquedi (13th century).[2][3] merkredi is recorded in 1339.[2][4]
Etymology
It is inherited from Old French mercresdi, inherited from Vulgar Latin *Mercuris diēs (“day of Mercury”), an alteration of classical Mercuriī diēs after the names of the other days of the week.[4][5][2][6] The Grand Robert and the Petit Robert give the altered form as Medieval Latin Mercoris diēs.[7][8] The classical phrase is formed from the genitive of Mercurius (“Mercury”) and diēs (“day”).[9][4]
The order with the name of the god first gave the French word and Italian mercoledì;[2][4][10] the order with the word for day first survives in Catalan dimecres, Occitan and Franco-Provençal dimecre and the Old French of Wallonia and Flanders, demerkes (13th century);[2][4][10] the name of the god alone gave Spanish miércoles and Romanian miercuri.[2][4][10]
Earliest recorded meaning
The word first appears as mercresdi in Philippe de Thaon's Comput (1119), naming the day of the week.[2][4]
Semantic evolution
The word has kept its meaning, the day between Tuesday and Thursday.[2][4] Mercredi des Cendres “Ash Wednesday”, the first day of Lent, is recorded by Robert Estienne in 1549.[9] By metonymy it has also meant a weekly gathering held on Wednesdays, a use the TLFi illustrates from Proust in 1922.[11] In France Wednesday later became the school holiday, replacing Thursday.[8]
In modern colloquial French mercredi! serves as a polite euphemism for the oath merde.[4][8][1]
Timeline
- 1119 – Mercresdi appears in Philippe de Thaon's Comput.[2]
- 13th century – The form merquedi is found in Villehardouin and Beaumanoir.[3]
- 1339 – The spelling merkredi is recorded.[2]
- 1549 – Robert Estienne records mercredi des Cendres.[9]
- 17th century – The popular pronunciation mécredi is condemned by Vaugelas.[4][3]
- 1922 – Proust uses mercredi for a Wednesday gathering.[11]
Meanings
Noun
- Wednesday, the day after Tuesday: Nous partons mercredi matin.[8][2]
- Mercredi des Cendres: Ash Wednesday, the first day of Lent.[8][9]
Interjection
Related words
- mercure
- mercuriale
- Latin Mercurius
- Latin diēs
Usage notes
The pronunciation mécredi, which Vaugelas condemned, was according to Thomas Corneille the most frequent in the 17th century.[4][3] Dialect forms include Picard mécredi and Walloon dimiek.[3]
References
- ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k 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 d e Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
- ^ 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
- ^ Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
- ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 6/2, 18b
- ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
- ^ a b c d e f Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
- ^ a b c d Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
- ^ a b c Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
- ^ a b Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF
Related etymologies
Cite this entry
“Mercredi.” Etymologically, 11 Nov. 2026, etymologically.com/fr/mercredi. Accessed 12 Nov. 2026.
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