Etymologically

Etymology and origin of the Spanish word sexo

Confidence
Established
Formation
Borrowing
First attested
1402 Pero López de Ayala, Caída de príncipes More words from the 15th century
Borrowed from
Latin sexus
Ultimate origin
Latin sexus
Etymology tree
inherited borrowed derived
Latin sexus
English sex
French sexe
Italian sesso
Spanish sexo
From the same root
English sexism ← sexus
Latin sexuālis ← sexus
English sexist ← sex
English sexy ← sex

Pronunciation

  • /ˈseɡso/, [ˈseɣ̞.so][1]

Forms

sexo m (plural sexos)[1] Some 15th- and 16th-century writers used the Latin form sexu.[2][3]

Etymology

It is borrowed from Latin sexus (“sex, the state of being male or female”), a learned word.[4][5][6][1] Corominas first finds it in Santillana and in Alfonso de Palencia (1490), and dates it about 1440; the CDH has it in 1402.[4][5][2] It is not in Nebrija, Covarrubias or Don Quixote, but it is in Oudin's dictionary and in Góngora and Quevedo.[4]

French borrowed the same Latin word as French sexe in the 13th century.[7] Its counterparts include Italian sesso and the English word sex.[8][9]

sexus had a neuter doublet secus, always used with an adjective meaning “male” or “female”.[10] Since antiquity it has been compared with secō (“to cut”), the sexes being a division of the species; de Vaan finds the link possible but the formation of the word unclear.[10][11][12] Wiktionary traces it to Proto-Indo-European *sek- (“to cut”).[1]

Earliest recorded meaning

The first hit in the CDH is in Pero López de Ayala's Caída de príncipes (1402): commo del mejor sexo es a saber de varones ovo quatro & de fenbras ovo dos “of the better sex, that is of males, he had four, and of females two”.[2] The sense is the one the word still has, the division between male and female.[2][6]

Semantic evolution

Autoridades (1739) defined the word as what distinguishes male from female in animals, chiefly said of human beings.[13] Terreros used it for the part of the body that distinguishes man from woman, and recorded el sexo devoto for women.[8] The Academy's dictionary of 1843 extended it to plants, and that of 1899 has bello sexo for women as a whole.[14][15] Baralt (1855) accepted bello sexo as a widespread Gallicism, from French beau sexe, but rejected el sexo alone for women.[16]

Corominas notes the euphemistic use for the female genitals, which has ancient precedents in Pliny and Lactantius.[4] The 2001 Academy dictionary already had the senses “sexual organs” and “sexual pleasure”; the current one has “sexual activity” for the second.[17][6] The adjective sexual is a coinage of Álvarez de Cienfuegos (died 1809), mocked by Moratín, and was first admitted by the Academy in 1843.[4]

Timeline

  • 1402 – first hit in the CDH, in López de Ayala's Caída de príncipes.[2]
  • c. 1440 – Corominas's date, from Santillana.[4][5]
  • 1490 – Alfonso de Palencia's Universal vocabulario uses it several times.[4]
  • 1548 – first record in the Americas, at Santo Domingo.[3]
  • 1739 – Autoridades says it is chiefly said of human beings, and pronounced with x as /ks/.[13]
  • late 18th century – sexual is first recorded.[5]
  • 1843 – the Academy extends the definition to plants and admits sexual.[14][4]
  • 1899 – the Academy records bello sexo “women as a whole”.[15]

Meanings

Noun

  1. sex: the organic condition, male or female, of animals and plants: En el formulario hay que indicar la edad y el sexo.[6][1]
  2. The set of beings that share the same sex: el sexo femenino.[6][1]
  3. The sexual organs.[6][1]
  4. Sexual activity: Hablaron de sexo sin ningún pudor.[6][1]

Word family

  • sexual
  • sexualidad
  • asexual
  • sexuado

Usage notes

Sexo débil and bello sexo “women” are now used with a disparaging or discriminatory intent, and are labelled so by the Academy;[18] sexo feo and sexo fuerte are said of men.[6][18] The ⟨x⟩ is pronounced /ks/, or /ɡs/ in Wiktionary's transcription.[13][1]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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. sexo
  3. ^ a b 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. sexo
  4. ^ a b c d e f g h Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 5, 235
  5. ^ a b c d Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. sexo
  6. ^ a b c d e f g h 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. sexo
  7. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. sexe
  8. ^ a b Terreros y Pando, Esteban de (1786–1793), Diccionario castellano con las voces de ciencias y artes y sus correspondientes de las tres lenguas francesa, latina e italiana, 4 vols., Madrid: Viuda de Ibarra, p. 3, 483
  9. ^ Segura Munguía, Santiago (2001), Nuevo diccionario etimológico latín-español y de las voces derivadas, Bilbao: Universidad de Deusto, p. 709
  10. ^ 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, p. s.v. sexus
  11. ^ Bénaben, Michel (2000), Dictionnaire étymologique de l'espagnol, Paris: Ellipses, p. s.v. sexo
  12. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. sexus
  13. ^ a b c Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 6, 106
  14. ^ a b Real Academia Española (1843), Diccionario de la lengua castellana, 9th ed., Madrid: Imprenta de D. Francisco María Fernández, p. 666
  15. ^ a b Real Academia Española (1899), Diccionario de la lengua castellana, 13th ed., Madrid: Imprenta de los Sres. Hernando y Compañía, p. 913
  16. ^ Baralt, Rafael María (1855), Diccionario de galicismos, Madrid: Imprenta de J. Cruzado, p. 655
  17. ^ Real Academia Española (2001), Diccionario de la lengua española, 22nd ed., Madrid: Espasa-Calpe, p. s.v. sexo
  18. ^ a b Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. sexo

Related etymologies

Cite this entry

“Sexo.” Etymologically, 7 Nov. 2026, etymologically.com/es/sexo. Accessed 7 Nov. 2026.

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