Etymologically

Etymology and origin of the Spanish word enero

Confidence
Established
Formation
Inherited
First attested
1171 an Aragonese charter, spelt ianero or ianer More words from the 12th century
Inherited from
Latin ienuarius via Old Spanish
Ultimate origin
Latin iānus

Pronunciation

  • /eˈneɾo/, [eˈne.ɾo][1]

Forms

enero m (plural eneros)[1] Old Spanish texts write ianero, janero, jenero, ienero, genero and henero beside enero.[2][3] Asturian has xineru and Aragonese chiner or chinero.[4][5]

Etymology

It is inherited from Old Spanish enero, earlier ianero and jenero, inherited from Vulgar Latin ienuārius (“January”), the form of Latin Iānuārius that many Latin inscriptions show.[3][6][7][1]

Italian gennaio, French janvier, Logudorese bennarzu and, through a variant with a doubled /n/, probably janeiro continue the inscriptional form.[3][8] Corominas thinks that Spanish, like Catalan gener and Gascon, comes rather from a shortened variant *ienārius.[3][9] The Mozarabic, Leonese and Aragonese forms keep the initial consonant that Castilian lost: Abencuzmán wrote Mozarabic yenair about 1150, and today Asturian has xineru and Aragonese chiner.[3][4]

The Latin month name is an adjective, “of Janus”, used with the Latin word for “month”; it was the first month of the Roman year from 153 BC.[10] It is formed from iānus (“arched passage, doorway; the god of gates and doors”), which de Vaan traces to a Proto-Indo-European noun *ieh₂-n-u- (“passage”).[11] Wiktionary connects it with the root Proto-Indo-European *yeh₂- (“to go”).[1]

Earliest recorded meaning

The DCECH's first record is ianero or ianer in an Aragonese charter of 1171, then jenero in another of 1192; the form enero appears in a document of 1218 in Menéndez Pidal's collection.[3][6] The CDH's earliest hit, the Fuero de Zorita de los Canes (1218–c. 1250), uses the word for the month as a term of the farming year: desde entrada de enero fasta quelas vinnas sean uendimiadas “from the beginning of January until the vineyards are harvested”.[12]

Semantic evolution

The meaning has stayed the same: the month itself, used from the start to date charters, as in enno mes de ienero (1250).[12][3] Covarrubias in 1611 explained it as the door of the year, named after Janus, who was shown with two faces looking at the old and the new year.[13] The Diccionario de Autoridades added that Numa Pompilius had put the month into the calendar and dedicated it to Janus.[14]

The Academy's dictionaries recorded proverbs about it: en enero, ni galgo lebrero ni halcón perdiguero, advice not to hunt in January (1817), and enero y febrero comen más que Madrid y Toledo, said by cattle dealers because animals lose flesh in the months without grass (1843).[15][16] The DLE also lists the phrase cuesta de enero, the hard weeks after the Christmas spending.[7] In Galician, andar á xaneira is said of a cat in heat, after the month when this happens.[3] Several languages of the Philippines took the word from Spanish, such as Tagalog Enero.[1]

Timeline

  • c. 1150 – the Mozarabic form yenair in Abencuzmán.[3][6]
  • 1171 – ianero or ianer in an Aragonese charter, the first record in a Spanish text.[3][1]
  • 1192 – jenero in another Aragonese charter.[3]
  • 1218 – the form enero in a document published by Menéndez Pidal.[3][6]
  • 1259 – a text of Alfonso X writes yanero.[17]
  • c. 1495 – Nebrija gives Latin ianuarius as its equivalent.[18]
  • 1549 – the first record from the Americas, in Cuzco.[19]
  • 1611 – Covarrubias relates the name to Janus and to the door of the year.[13]
  • 1884 – the Academy's dictionary gives the etymology “Del lat. ianuarius” for the first time.[20]

Meanings

Noun

  1. January: the first month of the year, with 31 days: Nos casamos un frío día de enero.[7][1][21]
  • Latin Iānuārius
  • Portuguese janeiro
  • Catalan gener

Usage notes

Like the other month names, enero is written with a small letter and is masculine.[7][1] The abbreviation is ene.[1]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock, p. s.v. enero
  3. ^ a b c d e f g h i j k l Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 2, 611
  4. ^ a b García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. 3588
  5. ^ Academia de la Llingua Asturiana (2000), Diccionariu de la Llingua Asturiana, Uviéu: ALLA; online at https://mas.academiadelallingua.com/diccionariu, p. s.v. xineru
  6. ^ a b c d Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. enero
  7. ^ a b c d Real Academia Española; Asociación de Academias de la Lengua Española (2014–), Diccionario de la lengua española, 23rd ed., online version 23.8, https://dle.rae.es, p. s.v. enero
  8. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 4576
  9. ^ Coromines, Joan (1980–2001), Diccionari etimològic i complementari de la llengua catalana, 10 vols., Barcelona: Curial / La Caixa (online ed., Institut d'Estudis Catalans 2024), p. 4, 461
  10. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  11. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  12. ^ a b Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. enero
  13. ^ a b Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 740
  14. ^ Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 3, 461
  15. ^ Real Academia Española (1817), Diccionario de la lengua castellana, 5th ed., Madrid: Imprenta Real, p. 359
  16. ^ Real Academia Española (1843), Diccionario de la lengua castellana, 9th ed., Madrid: Imprenta de D. Francisco María Fernández, p. 296
  17. ^ Kasten, Lloyd A.; Nitti, John J.; Gago Jover, Francisco (2002–), Diccionario de la prosa castellana del Rey Alfonso X, New York: Hispanic Seminary of Medieval Studies (electronic edition 2024), p. s.v. enero
  18. ^ Nebrija, Antonio de (1513), Vocabulario español-latino, Salamanca, ed. Marina Vidal Díez (2007), Biblioteca Virtual Miguel de Cervantes, p. 344
  19. ^ Boyd-Bowman, Peter (2003), Léxico hispanoamericano 1493–1993, ed. Ray Harris-Northall and John J. Nitti, New York: Hispanic Seminary of Medieval Studies, p. s.v. enero
  20. ^ Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 427
  21. ^ Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. enero

Related etymologies

Cite this entry

“Enero.” Etymologically, 7 Nov. 2026, etymologically.com/es/enero. Accessed 7 Nov. 2026.

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