Etymologically

Etymology and origin of the French word moût

Confidence
Established
Formation
Inherited
First attested
c. 1112 Voyage de saint Brendan More words from the 12th century
Inherited from
Latin mustum via Old French
Ultimate origin
Latin mustus
Etymology tree
inherited borrowed derived
Latin mustus
Latin mustum
French moût
Italian mosto
Romanian must
Spanish mosto
English must
From the same root
Latin musteus ← mustum
Romanian mustos ← mustum
Italian mostoso ← mosto
Spanish mostaza ← mosto

Pronunciation

Forms

moût m (plural moûts)[1] Old and Middle French moust; the spelling moût dates from the 17th century.[2][3][4]

Etymology

It is inherited from Old French moust, inherited from Latin mustum (“unfermented grape juice, new wine”).[5][6][1][7] The Latin noun is the neuter of the adjective mustus (“new”) used as a noun;[8][2] Rey calls it a rustic word with no clear origin.[8][2] Wiktionary links it to a root Proto-Indo-European *mus- (“damp”).[1] The circumflex marks the ⟨s⟩ lost from the Old French spelling.[2]

Cognate with Occitan most, Catalan most, Spanish mosto and Italian mosto.[4]

Earliest recorded meaning

The Grand Robert and the GLLF date moust to about 1112, in the Voyage de saint Brendan;[3][2] the TLFi's first record is in Aldebrandin of Siena's Régime du corps (about 1256), for grape juice meant for wine that has not yet fermented.[5] Littré quotes from Aldebrandin: Quant roisin sont cuit u vin novel, u quant il sont demouré en moust (“when grapes are cooked in new wine, or when they have remained as must”).[4]

Semantic evolution

The word kept the Latin sense of fresh, unfermented grape juice.[8] In 1611 Cotgrave extended it, by analogy, to the juice of other fruit and plants used to make alcoholic drinks, such as apples, pears, beet or barley;[5][8] brewers' moût, the sweet liquid got by steeping crushed malt in boiling water, is recorded by Larousse in 1903.[2]

In the 13th century it gave moutarde (1223, moustarde), a condiment first made with grape must; the English word mustard comes from it.[8][6] Littré records the saying cela n’a ni goût ni moût of a dish without seasoning and, figuratively, of a dull story or book.[4]

Timeline

  • c. 1112 – Moust in the Voyage de saint Brendan.[3][2]
  • 1223 – The derivative moustarde (later moutarde) appears.[8]
  • c. 1256 – Aldebrandin of Siena uses it of unfermented grape juice.[5]
  • 1611 – Cotgrave records the juice of other fruit and plants.[5][2]
  • 17th century – The spelling moût appears.[2]
  • 1903 – Larousse records the brewers' sense “wort”.[2]

Meanings

Noun

  1. must: grape juice freshly pressed, before alcoholic fermentation.[9][5]
  2. The juice of apples or pears pressed to make cidre or poiré.[9][2]
  3. A plant juice prepared for fermentation, such as brewers' wort.[9][2][1]

Word family

  • moutarde
  • moutardier

Usage notes

Moût is pronounced like mou and moue.[9] Littré notes that the final t is never sounded, even before a vowel.[4]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  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 Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  5. ^ a b c d e f 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. ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  7. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 6/3, 271a
  8. ^ a b c d e f Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  9. ^ a b c d Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert

Related etymologies

Cite this entry

“Moût.” Etymologically, 14 Nov. 2026, etymologically.com/fr/mo%C3%BBt. Accessed 15 Nov. 2026.

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