LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

mustus

mustus (feminine musta, neuter mustum)
Classical[ˈmʊs.tʊs]Ecclesiastical[ˈmus.tus]

Meaning

  1. adjectivefresh, young
  2. adjectiveunfermented (wine)

Declension

singular
formmasculinefeminineneuter
nominativemustusmustamustum
genitivemustīmustaemustī
dativemustōmustaemustō
accusativemustummustammustum
ablativemustōmustāmustō
vocativemustemustamustum
plural
formmasculinefeminineneuter
nominativemustīmustaemusta
genitivemustōrummustārummustōrum
dativemustīsmustīsmustīs
accusativemustōsmustāsmusta
ablativemustīsmustīsmustīs
vocativemustīmustaemusta

mustus, a, um,
I. adj., young, new, fresh (as adj. only ante-class.): agna, Cato ap. Prisc. 711 P.: vinum, id. R. R. 115.—
II. Subst.: mustum, i, n., new or unfermented wine, must, Cato, R. R. 120: dulce, Verg. G. 1, 295: novum, Plin. Ep. 9, 16, 2: linire victuro dolia musto, Juv. 9, 58.—Plur., of the different kinds of must, Plin. 14, 20, 25, § 125 al.—Poet. in plur.: musta, ōrum, vintages, i. e. autumns: tercentum musta videre, Ov. M. 14, 146.—Trop.: quasi de musto ac lacu fervidam orationem fugiendam, Cic. Brut. 83, 288.—
B. Transf., of oil: olei musta, new oil (al. olei, quam musta), Plin. 15, 1, 2, § 5.

Origins

Of unclear origin. Traditionally connected to muscus (“moss”); if so, then from Proto-Indo-European *mus-, *mews- (“damp”), and cognate with English moss, Old High German mos (“moss”) (German Moos), Icelandic mosi, Danish mos, Swedish mossa, Latin muscus (“moss”). De Vaan shows some skepticism of the above etymology, and provides an alternative theoretical derivation from Proto-Indo-European *mud-s-tos, from *mewd- (“to be cheerful, become happy”), whence Sanskrit मुद् (mud, “to rejoice”), Lithuanian mudrùs (“nimble, alert”). However, he notes that this derivation is semantically bold.

Quick answers

What does mustus mean in Latin?
mustus, a adjective, means “fresh, young; unfermented (wine)”.
How do you pronounce mustus?
In classical Latin, [ˈmʊs.tʊs]; in ecclesiastical (church) Latin, [ˈmus.tus].