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Etymology and origin of the Spanish word día

Confidence
Established
Formation
Inherited
First attested
978 a charter in Oelschläger's list More words from the 10th century
Inherited from
Latin *dia via Old Spanish
Ultimate origin
Proto-Indo-European *dyḗws
Derivations

Pronunciation

  • /ˈdia/, [ˈd̪i.a][1]

Forms

día m (plural días)[1] Old Spanish kept traces of Latin dies in compounds: disanto “holy day”, dimiércoles (a Palencia charter of 1239), dilunes in Juan del Encina and other Salamanca and Leonese texts, and diomingo in the Fuero Juzgo.[2]

Etymology

It is inherited from Old Spanish dia, inherited from Vulgar Latin *dia, a first-declension reshaping of Latin diēs (“day”).[2][3][1][4] The Vulgar Latin form prevailed in Spanish, Portuguese, Catalan and Occitan, while the other Romance languages kept the classical one; in French, Italian and partly in Catalan it was later replaced by the derivative diurnum, whence French jour, Italian giorno and Catalan jorn.[2]

The same Vulgar Latin word is Portuguese dia, Galician día, Catalan dia and Occitan dia, and the classical form is continued in Italian dì, Romanian zi and Old French di.[5][2][6][7]

The Latin word goes back to *djous and Proto-Indo-European *dyḗws (“heaven, sky”).[1] De Vaan explains it from the Proto-Italic accusative *dijēm of the word for the god of the clear sky, on which a new stem was built; the sense “day” came from the time when the sky is bright.[8] It is not related to the English word day.[1]

Earliest recorded meaning

Corominas's first record is a charter of 978.[2][3] The Cantar de mio Cid (c. 1140, in a 14th-century copy) has Aún vea el día que de mí ayades algo “may I yet see the day when you have some good of me”, and its hemistich otro día mañana “the next morning” is very frequent.[9][10]

Semantic evolution

Alfonso X's prose already uses día for the full day of twenty-four hours, for the daylight hours and for a moment or occasion, and a otro día for “on the next day”.[11] The Autoridades distinguished the día artificial of daylight from the día natural of twenty-four hours, and recorded many phrases: día de años “birthday”, día de Dios “Corpus Christi; the Last Judgement”, día de pescado “fast day without meat” and día diado, a phrase it took from Covarrubias, “the appointed day”.[12][2] Today the plural also means a person's name day or birthday (los días de), a period or epoch and a person's life.[13]

The construction el día lunes, with the common noun before the name of the weekday, is usual in Argentina, Chile and Mexico and was rooted in medieval Leonese and Aragonese.[2] As a morning greeting, buen día is used in much of Latin America beside buenos días.[14] Baralt condemned vivir al día and vivir de un día para otro as translations of French vivre au jour le jour.[15]

Timeline

  • 978 – first record, in a charter.[2][3]
  • c. 1140 – the Cantar de mio Cid uses día and otro día “the next day”.[9][10]
  • 1239 – the Latin-based compound dimiércoles “Wednesday” in a Palencia charter.[2]
  • 1250–1279 – Alfonso X's Lapidario uses the word for the full day and for daylight.[11]
  • 1513 – first record from the Americas, in Tierra Firme.[16]
  • 1732 – the Autoridades separates the día artificial of daylight from the día natural.[12]
  • 1899 – the Academy's dictionary gives the etymology “from Latin dies”.[17]

Meanings

Noun

  1. day: the period of twenty-four hours in which the Earth turns once on its axis.[13][1]
  2. A day set apart for a festival or dedicated to someone or something: el día de la Madre.[13]
  3. (also in the plural) A person's name day or birthday.[13]
  4. daytime: the time between dawn and dusk, when there is sunlight: En verano los días son largos.[13][1]
  5. The weather of a day: Amaneció un día nublado.[13]
  6. A moment or occasion: El día que vuelvas lo celebraremos.[13]
  7. (in the plural) A period, an epoch: Aquellos fueron días felices.[13]
  8. (in the plural) A person's life: Pasó sus últimos días en el campo.[13]

Word family

  • cotidiano
  • cuotidiano
  • dial
  • diario
  • diurno
  • Latin diēs
  • Portuguese dia

Usage notes

Día is masculine although it ends in -a: el día, buenos días.[1][13] In Argentina the phrase día por medio means “every other day”.[18]

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 2, 486
  3. ^ a b c Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. día
  4. ^ Bénaben, Michel (2000), Dictionnaire étymologique de l'espagnol, Paris: Ellipses
  5. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. 2259
  6. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  7. ^ Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon
  8. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  9. ^ a b Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE
  10. ^ a b Menéndez Pidal, Ramón (1908–1911), Cantar de Mio Cid: texto, gramática y vocabulario, 3 vols., Madrid: Bailly-Baillière, p. s.v. día
  11. ^ a b 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. día
  12. ^ a b Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. s.v. día
  13. ^ a b c d e f g h i j 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. día
  14. ^ Asociación de Academias de la Lengua Española (2010), Diccionario de americanismos, Lima: Santillana; online at https://www.asale.org/damer
  15. ^ Baralt, Rafael María (1855), Diccionario de galicismos, Madrid: Imprenta de J. Cruzado, p. 240
  16. ^ Boyd-Bowman, Peter (2003), Léxico hispanoamericano 1493–1993, ed. Ray Harris-Northall and John J. Nitti, New York: Hispanic Seminary of Medieval Studies
  17. ^ Real Academia Española (1899), Diccionario de la lengua castellana, 13th ed., Madrid: Imprenta de los Sres. Hernando y Compañía, p. 351
  18. ^ Garzón, Tobías (1910), Diccionario argentino, Barcelona: Imprenta Elzeviriana de Borrás y Mestres, p. 173

Related etymologies

Cite this entry

“Día.” Etymologically, 7 Nov. 2026, etymologically.com/es/d%C3%ADa. Accessed 7 Nov. 2026.

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