Etymologically

Etymology and origin of the Portuguese word cão

Confidence
Established
Formation
Inherited
First attested
1200s Cantigas de Santa Maria, as can More words from the 13th century
Inherited from
Latin canis
Ultimate origin
Proto-Indo-European *ḱwṓ
Etymology tree
inherited borrowed derived
Latin canis
Aromanian cãni
French chien
Italian cane
Portuguese cão
Romanian câine
Spanish can
From the same root
Latin canicae ← canis
Latin canīcula ← canis
Latin canīnus ← canis
Italian canile ← cane

Pronunciation

  • Brazil: /ˈkɐ̃w̃/, [ˈkɐ̃ʊ̯̃][1]
  • Portugal: /ˈkɐ̃w̃/[1]

Forms

cão m (plural cães, feminine cadela, feminine plural cadelas)[1] Old Galician-Portuguese wrote can, cã and cam, plural cães.[2][3] Houaiss also records the plurals caes and cayees in the 14th century and caãees in the 15th.[3]

Etymology

It is inherited from Latin canis (“dog”), from the accusative form, written Old Galician-Portuguese can and Old Galician-Portuguese cão in the oldest texts.[3][1][2][4]

The same Latin word is Galician can, Spanish can, Catalan ca, French chien, Italian cane and Romanian câine.[5][6] Catalan keeps it only in Majorca and in a few set phrases.[5] In Spanish, perro, recorded from about 1200, pushed the old word aside from the 14th century and left it archaic or poetic, while the Portuguese and Galician word stayed the ordinary one.[7]

Wiktionary derives the Latin word, through an earlier form canēs, from Proto-Indo-European *ḱwṓ (“dog”), the source of κύων (kúōn) and श्वन् (śván), and notes that the Latin form is much altered from the expected outcome.[1]

Earliest recorded meaning

A Latin text of 1152 already has per cam medium, with the Romance form of the word.[2][3] In Portuguese the word appears in the 13th century: the Cantigas de Santa Maria say of a man held mẽos que can “less than a dog” and compare a fighter to can bravo que guarda seu curral “a fierce dog guarding its yard”, and a cantiga of Afonso X has na cadela, polo can “in the bitch, for the dog”.[2] The insult is just as old: a cantiga calls Muhammad Mafomete cão “Muhammad the dog”.[8]

Semantic evolution

The Crónica Troiana speaks of men who non falan cõmo homes mays ladran cõmo cães “do not speak like men but bark like dogs”.[2] Barbosa (1611) lists the farm dog, the herd dog and the hunting dog, and Morais (1789) the phrases entre o cão e o lobo “at dusk” and despertar o cão que dorme “to wake a sleeping dog”.[9][10]

The name was also given to parts of weapons and tools: the hammer of a gun, a peg in a mill, an iron for the logs on a hearth, and an old piece of artillery.[3][4] Figueiredo (1899) and Silva Bastos (1912) record a popular sense “unpaid debt”, still current in Portugal.[4][11][3] In Brazil o cão is the Devil, and in the north-east a sweetened drink made with cachaça.[3][12] In Portugal cão is the adult dog beside cachorro “puppy”.[3]

Timeline

  • 1152 – per cam medium in a Latin text.[2]
  • 13th century – can in the Cantigas de Santa Maria and in the cantigas of Afonso X.[2][3]
  • 1513 – cão in the Livro dos Mártires.[13]
  • 1569 – Cardoso glosses Cão with Latin canis.[14]
  • 1611 – Barbosa lists cão de caça and cão de gado.[9]
  • 1789 – Morais records entre o cão e o lobo.[10]
  • 1877 – first record of the proverb cão que ladra não morde.[3]
  • 1899 – Figueiredo has the senses “piece of artillery” and “unpaid debt”.[4]

Meanings

Noun

  1. dog, the domestic canine;[3][15][1] (Portugal) an adult dog.[3][15][1]
  2. Any animal of the dog family.[3][16]
  3. (figurative) A vile or cruel person; a term of abuse.[3][15]
  4. (Brazil, informal) The Devil.[3][1]
  5. The hammer of a firearm.[3][1]
  6. A wooden peg through which the grain runs to the millstone.[3][15]
  7. A firedog holding the logs on a hearth.[3][17]
  8. (Portugal, informal) An unpaid debt.[3][17]
  9. (Portugal, informal) A shop assistant.[3]
  10. (historical) A piece of artillery; an armed boat.[3][15][1]
  11. (astronomy) Cão Maior and Cão Menor, two constellations.[3][18]

Word family

  • canzarrão
  • cãozinho
  • cão-guia
  • cão-lobo
  • cão-pastor
  • cão-polícia
  • cão-salsicha
  • cão-tinhoso
  • canalha
  • caniche
  • canicho
  • canídeo
  • canino
  • Latin canis
  • Galician can

Usage notes

The feminine is cadela and the plural cães.[1][15] The proverb cão que ladra não morde (in Brazil also cão que late não morde) says that one who threatens does not act.[3][1]

The spelling also had two minor words.[3] One is an old adjective cão “white-haired”, feminine cã, plural cãos, from Latin cānus (“white”) (see cã): the Crónica Troiana says that men who were young when the war began ia son uellos et cãos “are now old and grey”.[3][8][17] Vieira already called it little used.[19] The other, cão or cã, was the title of a khan, an Asian prince;[3][15][18][1] Houaiss, Aurélio and the DLP also give it as a caravanserai or an eastern market, from Persian خان (khān, “inn”).[3][15][18][1]

References

  1. ^ a b c d e f g h i j k l m n Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g 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. can
  3. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z 27 Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. cão
  4. ^ a b c d Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. s.v. cão
  5. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 1592
  6. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. canis
  7. ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 794
  8. ^ a b 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. cão
  9. ^ a b Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. cão
  10. ^ a b Silva, António de Morais (1789), Diccionario da lingua portugueza composto pelo padre D. Rafael Bluteau, reformado, e accrescentado, 2 vols., Lisboa: Simão Thaddeo Ferreira, p. 1, 228
  11. ^ Silva Bastos, José Timóteo da (1912), Diccionario etymologico, prosodico e orthographico da lingua portugueza, Lisboa: Parceria António Maria Pereira, p. s.v. cão
  12. ^ Navarro, Fred (2004), Dicionário do Nordeste, São Paulo: Estação Liberdade, p. s.v. cão
  13. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. cão
  14. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. cão
  15. ^ a b c d e f g h Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. cão
  16. ^ 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. cão
  17. ^ a b c Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. cão
  18. ^ a b c 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. cão
  19. ^ Vieira, Frei Domingos (1871–1874), Grande Diccionario Portuguez ou Thesouro da lingua portugueza, 5 vols., Porto: Ernesto Chardron e Bartholomeu H. de Moraes, p. 2, 88

Related etymologies

Cite this entry

“Cão.” Etymologically, 15 Nov. 2026, etymologically.com/pt/c%C3%A3o. Accessed 16 Nov. 2026.

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