Etymology and origin of the Portuguese word razão
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1200s spelt razon More words from the 13th century
- Inherited from
- Latin ratio
- Ultimate origin
- Latin reor
Etymology tree
From the same root
Pronunciation
Forms
razão f (plural razões)[1] Old Galician-Portuguese wrote razon, razõ and rrazon; the 15th century has raçom, rezão and rezam, and rasão is recorded in 1789.[2] Rezão survives in the dialects of Portugal.[3]
Etymology
It is inherited from Latin ratiō (“reckoning, account; reason”), written Old Galician-Portuguese razon in the oldest texts.[2][4][1] Nascentes explains the sense: the idea of thinking leads to comparing, looking for relations and finding causes.[4] The learned ração “ration” and rácio “ratio” are its doublets.[1][5]
The same Latin word is Galician razón, Spanish razón, Catalan raó, French raison and Italian ragione.[5][1]
De Vaan derives the Latin noun from ratus (“counted, fixed”), the past participle of reor (“to think, believe”), whose first sense was “to count”; he reconstructs Proto-Indo-European *Hreh₁- and compares Gothic 𐍂𐌰𐌸𐌾𐍉 (raþjō, “number, account”).[6]
Earliest recorded meaning
In the 13th-century Cancioneiro da Ajuda razon means “reason, reasoning”, “right, justice” (fazer razon “to act justly”), “motive, cause” and the text or subject of a song as opposed to its melody, the som.[7] The cantigas d'amigo have teer por razon “to consider just”.[7]
Semantic evolution
Barbosa (1611) records razão natural and he razão “it is right”.[8] The commercial razão, masculine, is the ledger in which a merchant enters debits and credits.[9][10] Mathematics uses the word for the ratio of two quantities, and philosophy for the faculty of thought that sets humans apart from other animals.[2][11] The word passed into Papiamentu as rason.[1]
Timeline
- 13th century – razon, razõ and the plural razões.[2]
- 13th century, second half – the Cancioneiro da Ajuda uses razon for reason, right, motive and the text of a song.[7]
- 15th century – the forms raçom, rezão and rezam.[2]
- 1518 – razão in the Espelho de Cristina.[12]
- 1538 – Rezam in a private letter.[13]
- 1569 – Cardoso translates Razão as Latin ratio.[14]
- 1611 – Barbosa records razão natural.[8]
- 1789 – the spelling rasão.[2]
Meanings
Noun
- reason, the faculty of thinking, understanding and judging.[2][15][1]
- Good sense, judgement; sound mind: perder a razão “to lose one's reason”.[2][16]
- cause, motive: Ninguém sabe a razão da demora.[2][15][1]
- An argument or justification, often in the plural.[2][16]
- Rightness; justice: ter razão “to be right”.[2][15][1]
- (mathematics) A ratio;[11][16][1] (finance) a percentage, rate of interest.[11][16][1]
- (old) News, information.[2][16]
- (masculine, bookkeeping) A ledger.[10][16]
Word family
- razoar
- arrazoar
- razoável
- desrazão
Related words
- raciocinar
- raciocínio
- racional
- ração
- rácio
- Latin ratio
- Galician razón
References
- ^ a b c d e f g h i j k l m Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ 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. razão
- ^ Instituto da Lingua Galega, Tesouro do léxico patrimonial galego e portugués (TLPGP), Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/tesouro, p. s.v. razão
- ^ a b Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. razão
- ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 7086
- ^ 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. reor
- ^ a b c 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. razon
- ^ a b Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. razão
- ^ Silva Bastos, José Timóteo da (1912), Diccionario etymologico, prosodico e orthographico da lingua portugueza, Lisboa: Parceria António Maria Pereira, p. s.v. razão
- ^ a b 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. razão
- ^ a b c 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. razão
- ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. razão
- ^ CLUL (ed.) (2014), P.S. Post Scriptum: Arquivo Digital de Escrita Quotidiana em Portugal e Espanha na Época Moderna, Lisboa: Centro de Linguística da Universidade de Lisboa, http://ps.clul.ul.pt, p. s.v. razão
- ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. razão
- ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. razão
- ^ a b c d e f Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 7791
Related etymologies
Cite this entry
“Razão.” Etymologically, 15 Nov. 2026, etymologically.com/pt/raz%C3%A3o. Accessed 16 Nov. 2026.
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