Etymologically

Etymology and origin of the Italian word gennaio

Confidence
Established
Formation
Inherited
First attested
1175–1200 Proverbia que dicuntur (Venetian) More words from the 12th century
Inherited from
Latin Ienuarius
Ultimate origin
Latin Iānus

Pronunciation

  • /d͡ʒenˈna.jo/[1]

Forms

gennaio m (uncountable)[1] Old and regional forms include Old Italian gennaro, used by Petrarch, Old Italian genaio, Old Italian iennaio and northern Old Italian çenaro.[2][3][4]

Etymology

It is inherited from Late Latin Ienuārius, the form of the inscriptions and of Late Latin, for classical Latin Iānuārius (“(month) of Janus”).[5][6][7][1] The month was sacred to Iānus, the god of gates and doorways, and was the eleventh month of the old Roman calendar that began in March.[6][8][9] Devoto explains the Late Latin vowel by analogy with Februārius, and the Italian ⟨-nn-⟩ as the normal outcome of ⟨-nu-⟩ before a vowel.[10]

The word is panromance: French janvier, Occitan genoier, Catalan gener, Spanish enero and Portuguese janeiro.[6][11] DEI notes that Romanian has it only through Byzantine Greek, from which it also reached Calabrian.[3][11]

De Vaan derives the god's name from Proto-Italic *jānu- (“door”) and Proto-Indo-European *ieh₂-n-u- (“passage”); the oldest sense was “passage, corridor”, and iānua (“door”) belongs to the same stem.[9]

Earliest recorded meaning

The TLIO's first record is the Venetian Proverbia que dicuntur, of the last quarter of the 12th century; in Tuscany DELI dates the word to 1285 and to the poet Muscia da Siena, who died before 1288.[2][5] The sense is the first month of the year, the first after the winter solstice.[2]

Semantic evolution

The Old Italian texts spell the month in many ways, from Tuscan gennaio and gennaro to northern çenaro and zenaro and southern ginnaru.[2][4] Muscia da Siena wishes to send mandorle novelle di gennaio (fresh almonds in January) to a friend, and Dante writes prima che gennaio tutto si sverni (before January is wholly out of winter) in the Paradiso.[4]

Figuratively, January stood for old age, as in avere i pulcini di gennaio, to have children late in life.[12][13] Somali borrowed the word as jannaayo.[1]

Timeline

  • 1175–1200 – The Venetian Proverbia que dicuntur have the word.[2]
  • 1285 – First Tuscan record.[5]
  • Before 1288 – Muscia da Siena uses gennaio.[5][4]

Meanings

Noun

  1. January, the first month of the year in the Julian and Gregorian calendars, of 31 days: A gennaio fa sempre freddo qui.[7][14][8][1]
  2. (figurative, dated) Old age.[13][12]

Usage notes

The archaic gennaro survives in older literature.[14][15] The word is used mostly in the singular.[7][14]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Tesoro della Lingua Italiana delle Origini (1997–), Opera del Vocabolario Italiano, CNR, Firenze; tlio.ovi.cnr.it
  3. ^ a b Battisti, Carlo; Alessio, Giovanni (1950–1957), Dizionario etimologico italiano, 5 vols., Firenze: Barbèra (reprint 1975), p. 1785
  4. ^ a b c d Battaglia, Salvatore; Bàrberi Squarotti, Giorgio (1961–2002), Grande dizionario della lingua italiana, 21 vols., Torino: UTET; digital ed. Accademia della Crusca
  5. ^ a b c d Cortelazzo, Manlio; Zolli, Paolo (1999), Dizionario etimologico della lingua italiana, 2nd ed. by Manlio Cortelazzo and Michele A. Cortelazzo, Bologna: Zanichelli
  6. ^ a b c Nocentini, Alberto; Parenti, Alessandro (2010), l'Etimologico: vocabolario della lingua italiana, Firenze: Le Monnier
  7. ^ a b c De Mauro, Tullio (ed.) (2003), Grande dizionario italiano dell'uso, CD-ROM version 2.0, Torino: UTET
  8. ^ a b Sabatini, Francesco; Coletti, Vittorio; Manfredini, Manuela (2026), Dizionario italiano Sabatini Coletti, digital ed., Milano: Sansoni / Rizzoli Larousse
  9. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ Devoto, Giacomo (1968), Avviamento alla etimologia italiana: dizionario etimologico, 2nd ed., Firenze: Le Monnier
  11. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  12. ^ a b Gabrielli, Aldo (2020), Grande dizionario italiano, digital ed., Milano: Hoepli
  13. ^ a b Wikizionario (Italian Wiktionary), it.wiktionary.org
  14. ^ a b c Devoto, Giacomo; Oli, Gian Carlo; Serianni, Luca; Trifone, Maurizio (2026), Nuovo Devoto–Oli: il vocabolario dell'italiano contemporaneo, digital ed., Milano: Le Monnier
  15. ^ Vocabolario della lingua italiana Treccani (2011), Roma: Istituto della Enciclopedia Italiana

Related etymologies

Cite this entry

“Gennaio.” Etymologically, 14 Nov. 2026, etymologically.com/it/gennaio. Accessed 14 Nov. 2026.

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