Etymologically

Etymology and origin of the Portuguese word cu

Confidence
Established
Formation
Inherited
First attested
1300s More words from the 14th century
Inherited from
Latin culus
Ultimate origin
Proto-Indo-European *kuH-lo-
Etymology tree
inherited borrowed derived
Latin cūlus
Catalan cul
French cul
Italian culo
Portuguese cu
Romanian cur
Spanish culo
Derivations
From the same root
English cul-de-sac ← cūlus
French culotte ← cūlus
French cul-de-sac ← cul
French reculer ← cul

Pronunciation

  • Brazil: /ˈku/[1]
  • Portugal: /ˈku/[1]

Forms

cu m (plural cus)[1] Old Galician-Portuguese wrote cuu and cũu.[2][3]

Etymology

It is inherited from Latin cūlus (“the rump, anus”), written Old Galician-Portuguese cuu in the oldest texts.[3][4][5][1]

The same Latin word is Galician cu, Spanish culo, Catalan cul, Occitan cul, French cul, Italian culo and Romanian cur.[6][7][1] The Latin word is a popular one, found in satire, graffiti and the Priapea;[8] de Vaan traces it to Proto-Italic *kūlo- and Proto-Indo-European *kuH-lo- (“backside, rear”), with cognates in cúl (“back”) and Welsh cil (“corner”).[9][10] De Vaan rejects the older link to a root *(s)kewH- (“to cover”).[9][1] Lewis & Short and Figueiredo compared it with Ancient Greek κοῖλος (koîlos, “hollow”).[11][12]

Earliest recorded meaning

Houaiss and Cunha date the word to the 14th century.[3][4] It is common in the satirical cantigas d'escarnho e de mal dizer: Estevan da Guarda has atá o cuu “right up to the backside”, and Lopo Liaz uses dar do cuu for clumsy wriggling of the rump.[13]

Semantic evolution

The word has kept both its Latin senses, the anus and, by extension, the buttocks.[3][14] Houaiss labels the sense “anus” for Brazil and Portugal, and the sense “buttocks” for Portugal only.[3] Bluteau in 1712 called it an uncivil and indecent synonym of the seat, and Caldas Aulete quotes it from Fernão Lopes's Crónica de D. João I.[15][16]

Transferred senses name the bottom of things: the end of a needle opposite the point, and in old nautical use the lower end of a block or deadeye.[3][14] In Brazil it is also a crude word for a tiresome or worthless person or thing.[1][17] Derivatives include cueiro “baby's swaddling cloth”, recorded in the 15th century, and cueca “underpants”, recorded in 1813.[4]

Timeline

  • 14th century – first records, spelt cuu.[3][4]
  • 15th century – first record of cueiro.[4]
  • 1513 – the Livro dos Mártires uses the word.[18]
  • 1569 – Cardoso's dictionary renders it with Latin podex and anus.[19]
  • 1712 – Bluteau marks the word as uncivil.[15]
  • 1813 – first record of cueca.[4]

Meanings

Noun

  1. (vulgar) The anus.[3][14][1]
  2. (vulgar) (chiefly Portugal) The buttocks, the backside; bunda.[3][14][1]
  3. The end of a needle (agulha) opposite the point, where the eye is.[3][14]
  4. (nautical, obsolete) The lower end of a block or deadeye, opposite its head.[3][14]
  5. (Brazil, vulgar) Something or someone tiresome, bad or worthless.[1][17]

Word family

  • cueca
  • cueiro
  • cu-doce
  • cuzão

Usage notes

The word is taboo in both Brazil and Portugal, and most of its many set phrases are coarse: ficar com o cu na mão “to be terrified” is Brazilian, cair de cu “to be astonished” is European.[14][16] Cu de Judas is a remote place.[20][1] The chemical symbol of copper is the same word with a capital.[3][21]

References

  1. ^ a b c d e f g h i j k Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ Universo Cantigas: Glosario da poesía medieval profana galego-portuguesa, A Coruña: Instituto da Lingua e Literatura (ILLA), Universidade da Coruña, https://www.universocantigas.gal, p. s.v. cuu
  3. ^ a b c d e f g h i j k l Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. cu
  4. ^ a b c d e f Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. cu
  5. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. cu
  6. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 3384
  7. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954)
  8. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. cul
  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. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  11. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  12. ^ Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. s.v. cu
  13. ^ Instituto da Lingua Galega, Dicionario de dicionarios do galego medieval (DDGM), ed. Ernesto González Seoane, Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/ddgm, p. s.v. cuu
  14. ^ a b c d e f g Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. cu
  15. ^ a b Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. cu
  16. ^ a b Aulete, Francisco Júlio Caldas, Dicionário contemporâneo da língua portuguesa (1st ed. 1881), online as Aulete Digital, Rio de Janeiro: Lexikon, https://aulete.com.br, p. s.v. cu
  17. ^ a b Wikcionário (Portuguese Wiktionary), pt.wiktionary.org, p. s.v. cu
  18. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. cu
  19. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. cu
  20. ^ Michaelis: Moderno Dicionário da Língua Portuguesa, São Paulo: Melhoramentos (online as Michaelis Dicionário Brasileiro da Língua Portuguesa, https://michaelis.uol.com.br), p. s.v. cu
  21. ^ Academia das Ciências de Lisboa, Dicionário da Língua Portuguesa, revised online edition (2023–) of the Dicionário da Língua Portuguesa Contemporânea (2001), https://dicionario.acad-ciencias.pt, p. s.v. cu

Related etymologies

Cite this entry

“Cu.” Etymologically, 15 Nov. 2026, etymologically.com/pt/cu. Accessed 16 Nov. 2026.

Last edited on . ·