Etymologically

Etymology and origin of the Latin word musteus

Confidence
Established
Formation
Derivation
First attested
c. 235–200 BC Naevius More words from the 3rd century BC
Ultimate origin
Latin mustum
Etymology tree
inherited borrowed derived
Latin mustus
Latin mustum
English must
Latin musteus

Forms

musteus (feminine mustea, neuter musteum); first/second-declension adjective[1]

Etymology

It is formed from Latin mustum (“must, new wine”) + -eus.[2][3] De Vaan finds mustum from Cato on, beside the adjective mustus (“new, fresh”); he notes that mustus could in theory come from a root Proto-Indo-European *mud- (“to be cheerful”), but finds the semantic connection quite gratuitous.[4]

Earliest recorded meaning

Georges cites a comedy of Naevius (c. 235–200 BC)[5][6] in which it is said of a girl, meaning fresh or young; the OLD's first example is in Cato's De agricultura, of a kind of quince.[2][6]

Semantic evolution

The basic sense is like must, fresh and juicy: Varro has it, Columella of honey still fermenting, Pliny the Elder of fresh cheese and Martial.[2][7] Pliny the Younger calls a book still in its early stages musteus.[2] As a name it marked a quince (and a pear) that ripened quickly;[2][7] Pliny says these were later called melimela.[2][7]

It lives on in Romance: the TLL lists Italian moscio and Catalan moix,[3] and Wiktionary adds Spanish mozo and Portuguese moço.[1]

Timeline

  • c. 235–200 BC – Naevius uses it of a young woman.[5][6]
  • 234–149 BC – Cato names quinces and pears mustea.[2][6]
  • 23/24–79 AD – Pliny the Elder uses it of fresh cheese.[2][6]

Meanings

Adjective

  1. Of or like must; fresh, juicy.[2][7]
  2. (figurative) New, fresh; of a book, not yet mature.[2][7]
  3. Of a variety of quince or pear that ripens early.[2]

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  6. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
Cite this entry

“Musteus.” Etymologically, 8 Nov. 2026, etymologically.com/la/musteus. Accessed 8 Nov. 2026.

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