Etymology and origin of the Portuguese word traidor
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1228 a Galician-Portuguese document, spelt traedor More words from the 13th century
- Inherited from
- Latin traditor
- Ultimate origin
- Latin trādō
Etymology tree
From the same root
Pronunciation
Forms
traidor m (plural traidores, feminine traidora, feminine plural traidoras)[1] Old Galician-Portuguese wrote traedor, treedor and traydor; later forms are trahedor (14th century), tredor and treidor (15th), tredoro (1552) and tredro (1613).[2][3][4] Feijó (1734) insists on traidor, not tredor.[5]
Etymology
It is inherited from Latin trāditor (“one who hands over; traitor”), written Old Galician-Portuguese traedor in the oldest texts.[2][3][1][4] Nascentes says the modern form was remade from the old treedor and tredor.[6]
The same Latin word is Galician traidor, Spanish traidor, Catalan traïdor, French traître, Italian traditore and Romanian trădător.[7][1]
The Latin noun is formed from trādō (“to hand over, give up”) with the agent suffix -tor.[8][1] Wiktionary analyses the verb as trāns (“across”) and dō (“to give”).[1]
Earliest recorded meaning
A document of 1228 already uses it as an insult, punishing whoever disser a seu uiçino mãa paraula, traedor “says an evil word to his neighbour, ‘traitor’”.[4] The Cantigas de Santa Maria use it often, also as a mere insult (Don vilão traedor), and the cantigas d'escarnho have the plural traedores.[4] Houaiss and Cunha date it to the 13th century.[2][3]
Semantic evolution
The adjectival use is medieval: the cantigas of Universo Cantigas have traedor both as a noun and as an adjective, as in falso treedor.[9] Cardoso (1569) glosses Traidor with Latin proditor, and Pereira (1697) adds traditor and perfidus.[10][11]
Houaiss records the modern adjectival senses “compromising, giving someone away”, as of a voice, and “dangerous without seeming so”, as of a current.[2] Silva Bastos (1912) lists a slang sense “shoe”.[12]
Timeline
- 1228 – traedor as an insult in a Galician-Portuguese document.[4]
- 13th century – traedor and treedor in the Cantigas de Santa Maria and the cantigas d'escarnho.[4][3]
- 14th century – the form trahedor.[2]
- 15th century – the forms tredor and treidor.[2]
- 1569 – Cardoso's dictionary has Traidor.[10]
- 1613 – the form tredro.[2]
- 1734 – Feijó rejects tredor in favour of traidor.[5]
Meanings
Noun
Adjective
- Treacherous, disloyal.[2][14][1]
- That gives someone away; compromising: Foi apanhado pelo sotaque traidor.[2][1]
- Dangerous while looking safe: um rio traidor.[2][15]
Word family
- traidoramente
Related words
References
- ^ a b c d e f g h i j k l Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. traidor
- ^ a b c d Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. traição
- ^ a b c d e f 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. traedor
- ^ a b Feijó, João de Morais Madureira (1734), Orthographia, ou Arte de escrever, e pronunciar com acerto a lingua portugueza, Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. traidor
- ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. traidor
- ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
- ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. trāditor
- ^ 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. traedor
- ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. traidor
- ^ Pereira, Bento (1697), Thesouro da lingoa portuguesa, in the 1697 edition of his Prosodia (1st ed. 1647; CLP transcription, Universidade de Aveiro), p. s.v. traidor
- ^ Silva Bastos, José Timóteo da (1912), Diccionario etymologico, prosodico e orthographico da lingua portugueza, Lisboa: Parceria António Maria Pereira, p. s.v. traidor
- ^ 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. traidor
- ^ Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. traidor
- ^ Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. traidor
Related etymologies
Cite this entry
“Traidor.” Etymologically, 15 Nov. 2026, etymologically.com/pt/traidor. Accessed 16 Nov. 2026.
Last edited on . ·