Etymologically

Etymology and origin of the Italian word mostaccio

Confidence
Probable
Formation
Inherited
First attested
1350–1400 as mostazo More words from the 14th century
Inherited from
Latin mustacium
Ultimate origin
Ancient Greek μύσταξ

Forms

mostaccio m (plural mostacci)[1] Old forms include mostacio, mostazo, mostazzo, mustaccio and mustazzo.[2]

Etymology

It is inherited from Medieval Latin mustacium, recorded in the plural in a 7th-century gloss, the Erfurt glossary.[1][3][4] The Latin word was taken from Byzantine Greek μουστάκιον (moustákion), a diminutive of Ancient Greek μύσταξ (mústax, “upper lip; moustache”).[1][3][5][6][7][8] Zingarelli compares μάσταξ (mástax, “mouth”), and Nocentini traces the Greek word to an imitative root, as in muso.[9][10] Wiktionary compares Sicilian mustazzu.[1]

The same Greek word later gave mustacchio, through Medieval Greek, in the 16th century.[10][4] Meyer-Lübke saw the matter differently: Old Italian mostacchio gave French moustache and Spanish mostacho, and this word, in the sense “snout”, came back from Spanish.[11] He also thought that Romanian mustață points to *mustacium, which could also underlie this word.[11]

Earliest recorded meaning

GRADIT dates the word to the second half of the 14th century, in the old form mostazo.[3] An early poem, the Storia di Stefano, threatens to strike someone's mostazo with the fist; the sense is “face”.[2] The word appears earlier as a name: Jacopo Mostacci or Mostazzi, perhaps from Pisa, was an imperial falconer and poet in 1240.[4]

Semantic evolution

In the chivalric poems the word is the face that gets hit: Orlando's mostaccio is all bruised, and in Pulci Rinaldo strikes Salicorno in the face with his gauntlet.[2][12] Pulci also has it for “snout, mug”, and it is used of a horse's muzzle.[4] The plural mostacci meant “moustache” in the 16th century, when Turkish-style moustaches came into fashion;[4][10] Garzoni mocked the barbers' new mostacchi.[4][10]

Today the word is literary or jocular for “face”, often contemptuous, in phrases such as rompere il mostaccio a qualcuno “to smash someone's face”.[3][5][9][8] In some regions it is still a form of mustacchio, also in its nautical senses.[7][9] Spanish, Catalan and Galician have the word, which Wiktionary describes as borrowed from Italian.[1]

Timeline

  • 7th century – The Erfurt glossary has Latin mustacia.[4][1]
  • 1240 – Jacopo Mostacci, a falconer and poet, is named.[4]
  • Second half of the 14th century – Mostazo is recorded.[3][5]
  • 16th century – Mostacci and mustacchi are used for moustaches in the Turkish fashion.[4][10]

Meanings

Noun

  1. (jocular, often derogatory) face, mug: gli ha dato un pugno sul mostaccio.[3][5][6][9][7]
  2. (popular, regional) A moustache; the same as mustacchio.[3][9][7]

Word family

  • mostaccino
  • mostacciata
  • mostaccione
  • smostacciare

Usage notes

Rompere il mostaccio a qualcuno means “to beat someone up”, and dire qualcosa sul mostaccio “to say something to someone's face”.[8][5] Zingarelli lists mostacciuolo as a diminutive of mostaccio; the sweet mostacciolo has another origin.[9][10]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
  3. ^ a b c d e f g De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  4. ^ a b c d e f g h i Prati, Angelico (1951), Vocabolario etimologico italiano, Milano: Garzanti, p. 682
  5. ^ a b c d e Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
  6. ^ a b Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  7. ^ a b c d Duro, Aldo (ed.) (1986–1994), Vocabolario della lingua italiana, Roma: Istituto della Enciclopedia Italiana; online ed. treccani.it/vocabolario (2008 copy)
  8. ^ a b c Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli
  9. ^ a b c d e f Zingarelli, Nicola (2009), Lo Zingarelli 2010: vocabolario della lingua italiana, Bologna: Zanichelli
  10. ^ a b c d e f Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  11. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  12. ^ Tommaseo, Niccolò; Bellini, Bernardo (1861–1879), Dizionario della lingua italiana, 4 vols., Torino: UTET

Related etymologies

Cite this entry

“Mostaccio.” Etymologically, 14 Nov. 2026, etymologically.com/it/mostaccio. Accessed 15 Nov. 2026.

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