Etymologically

Etymology and origin of the Spanish word adulterio

Confidence
Established
Formation
Borrowing
First attested
c. 1200 Fazienda de Ultra Mar, in a 13th-century copy More words from the 12th century
Borrowed from
Latin adulterium
Ultimate origins
Proto-Italic *ad-,*al-tero-,*-i(j)osProto-Indo-European *-ō
Etymology tree
inherited borrowed derived
Latin alter
Catalan altre
French autre
Italian altro
Spanish otro
Latin adulterō
Latin adulter
Latin adulterium
English adultery
Spanish adulterio
From the same root
Latin alterātiō ← alter
Latin altercor ← alter
Latin alternus ← alter
Latin alterō ← alter
Latin alteruter ← alter
French autrefois ← autre
French autrement ← autre
Latin adultera ← adulter
Latin adulterīnus ← adulter

Pronunciation

  • /adulˈteɾjo/, [a.ð̞ul̪ˈt̪e.ɾjo][1]

Forms

adulterio m (plural adulterios)[1] A popular form adurterio is recorded in Murcia.[2]

Etymology

It is borrowed from Latin adulterium (“adultery”), a learned word taken from Latin in the 13th century.[3][4][5] Wiktionary instead treats it as inherited.[1] Portuguese adultério, Catalan adulteri and French adultère (12th century) were likewise taken from Latin.[6][7][8][9] Popular forms of the Latin word survived only in older Gallo-Romance, such as Old French avoutire and Old Occitan avouteri.[10]

The Latin noun is formed from adulter (“adulterer”) with the suffix -ium according to the OLD.[11] Wiktionary derives it from the verb adulterō (“to commit adultery; to falsify”) instead.[1] The verb is perhaps from ad- and alter (“the other”), and the agent noun may in turn be a back-formation from the verb.[11][1] Spanish has the related learned words adúltero (13th century) and adulterar (early 15th century).[3]

Earliest recorded meaning

The earliest hit in the CDH is the Fazienda de Ultra Mar (c. 1200, in a 13th-century copy), which tells of the vengeance taken por el duelo del adulteryo de Dina su ermana “for the wrong of the defilement of Dinah their sister”.[12] The Fuero de Zorita de los Canes (1218–c. 1250) heads a chapter Del que su muger fallare en adulterio “Of him who finds his wife in adultery”.[12]

Semantic evolution

In medieval texts the word covers illicit or sinful intercourse in general, beside the strict sense of a breach of marriage.[2][13] The Medieval Latin word had the same broad sense of any intercourse outside marriage.[14] Alfonso X's Estoria de España also uses it for the breaking of a law or a church commandment.[15]

The Diccionario de Autoridades (1726) defines it as intercourse between a married woman and another man, a married man and another woman, or two married people.[16] The Academy's dictionary of 1884 adds a legal definition, as the crime of a married woman who lies with a man not her husband, and of the man who knows she is married.[17] The 2001 DRAE still limited it to a partner of the other sex, a restriction the current DLE has dropped; both keep the old sense “falsification, fraud”, now marked as obsolete.[18][5]

Timeline

  • c. 1200 – the Fazienda de Ultra Mar (in a 13th-century copy) has adulteryo.[12]
  • 1218–1250 – the Fuero de Zorita de los Canes has adulterio.[12]
  • 1247 – the Fueros de Aragón have a title on adultery.[12]
  • 1255 – the Fuero Real lists it with treason and homicide.[2]
  • 1270–1284 – the Estoria de España uses it for married women and for breaches of church law.[15]
  • c. 1495 – Nebrija gives adulterio de casados as Latin adulterium.[19]
  • 1535 – first record from the Americas, in Cartagena.[20]
  • 1726 – the Diccionario de Autoridades defines it.[16]
  • 1884 – the Academy adds the legal definition.[17]

Meanings

Noun

  1. adultery: voluntary sexual relations between a married person and someone other than their spouse.[5][1]
  2. (obsolete) falsification, fraud.[5][18]
  • adúltero
  • adulterar
  • adulterino
  • alterar
  • Latin adulterium

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Real Academia Española (2021–), Tesoro de los diccionarios históricos de la lengua española (TDHLE): Diccionario histórico (1933–1936), its unpublished slips, Diccionario histórico (1960–1996), DHECan, DHECR, DHEVen, https://www.rae.es/tdhle, p. s.v. adulterio
  3. ^ a b Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 323
  4. ^ Lleal, Coloma (dir.), DICCA-XV: Diccionario del castellano del siglo XV en la Corona de Aragón, Barcelona: Universitat de Barcelona, Grup d'Estudis d'Història de la Llengua (GHCL), https://ghcl.ub.edu/diccaxv, p. s.v. adulterio
  5. ^ 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. adulterio
  6. ^ Machado, José Pedro (1987), Dicionário etimológico da língua portuguesa, 4th ed., 5 vols., Lisboa: Livros Horizonte, p. 115
  7. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. adultério
  8. ^ Alcover, Antoni M.; Moll, Francesc de B. (1930–1962), Diccionari català-valencià-balear, 10 vols., Palma de Mallorca: Moll, p. s.v. adulteri
  9. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  10. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  11. ^ a b Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  12. ^ a b c d e Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. adulterio
  13. ^ Alonso Pedraz, Martín (1986), Diccionario medieval español: desde las Glosas Emilianenses y Silenses (s. X) hasta el siglo XV, 2 vols., Salamanca: Universidad Pontificia de Salamanca, p. 149
  14. ^ Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  15. ^ 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. adulterio
  16. ^ a b Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 1, 96
  17. ^ a b Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 24
  18. ^ a b Real Academia Española (2001), Diccionario de la lengua española, 22nd ed., Madrid: Espasa-Calpe, p. s.v. adulterio
  19. ^ Nebrija, Antonio de (1513), Vocabulario español-latino, Salamanca, ed. Marina Vidal Díez (2007), Biblioteca Virtual Miguel de Cervantes, p. 285
  20. ^ 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. adulterio

Related etymologies

Cite this entry

“Adulterio.” Etymologically, 14 Nov. 2026, etymologically.com/es/adulterio. Accessed 14 Nov. 2026.

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