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
From the same root
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
- dog, the domestic canine;[3][15][1] (Portugal) an adult dog.[3][15][1]
- Any animal of the dog family.[3][16]
- (figurative) A vile or cruel person; a term of abuse.[3][15]
- (Brazil, informal) The Devil.[3][1]
- The hammer of a firearm.[3][1]
- A wooden peg through which the grain runs to the millstone.[3][15]
- A firedog holding the logs on a hearth.[3][17]
- (Portugal, informal) An unpaid debt.[3][17]
- (Portugal, informal) A shop assistant.[3]
- (historical) A piece of artillery; an armed boat.[3][15][1]
- (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
Related words
- 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
- ^ a b c d e f g h i j k l m n Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ 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
- ^ 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
- ^ 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
- ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 1592
- ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. canis
- ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 794
- ^ 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
- ^ a b Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. cão
- ^ 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
- ^ Silva Bastos, José Timóteo da (1912), Diccionario etymologico, prosodico e orthographico da lingua portugueza, Lisboa: Parceria António Maria Pereira, p. s.v. cão
- ^ Navarro, Fred (2004), Dicionário do Nordeste, São Paulo: Estação Liberdade, p. s.v. cão
- ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. cão
- ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. cão
- ^ 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
- ^ 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
- ^ a b c Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. cão
- ^ 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
- ^ 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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