Etymologically

Etymology and origin of the Portuguese word escuro

Confidence
Established
Formation
Inherited
First attested
1200s More words from the 13th century
Inherited from
Latin obscurus
Ultimate origin
Latin obscūrus
Etymology tree
inherited borrowed derived
Latin obscūrus
Portuguese escuro
Spanish oscuro
French obscur
Italian oscuro
From the same root
Latin obscūrē ← obscūrus
Latin obscūritās ← obscūrus
Latin obscūrō ← obscūrus
Italian scuro ← oscuro

Pronunciation

  • Brazil: /isˈku.ɾu/, /esˈku.ɾu/[1]
  • Rio-de-Janeiro: /iʃˈku.ɾu/, /eʃˈku.ɾu/[1]
  • Portugal: /(i)ʃˈku.ɾu/[1]

Forms

escuro (feminine escura, masculine plural escuros, feminine plural escuras, comparable, comparative mais escuro, superlative o mais escuro or escuríssimo, diminutive escurinho)[1]

Etymology

It is inherited from Latin obscūrus (“dark”), by the popular route, written Old Galician-Portuguese escuro, Old Galician-Portuguese scuro and Old Galician-Portuguese oscuro in the old language.[2][3][1] The learned form of the same Latin word is obscuro.[2][1]

Nascentes and Aurélio describe the change of the first syllable as a change of prefix.[4][5] Nascentes lists three explanations of the lost ⟨b⟩: Menéndez Pidal saw the pull of Latin words beginning with ⟨sc-⟩, such as scrībō (“to write”);[6] Nunes also thought of analogy;[6] Cornu put it down to the following sibilant.[6]

The same Latin word is Galician escuro, Spanish oscuro, Occitan escur, French obscur and Italian scuro.[1][7] Castilian, too, long preferred Old Spanish escuro, the only form in Cervantes's Quixote, and the form with ⟨o-⟩ gained ground under Latin influence in the Golden Age.[8]

Wiktionary analyses the Latin word as ob- and a *scūrus (“dark”), from Proto-Italic *skoiros and Proto-Indo-European *(s)ḱeh₃i-, comparing Old Irish cíar (“dark”).[1] De Vaan thinks the first meaning was “darkened, covered”, notes that the division of the word is disputed, and gives his Proto-Indo-European reconstruction with a question mark.[9]

Earliest recorded meaning

Houaiss and Cunha date the adjective to the 13th century.[2][3] The Cantigas de Santa Maria speak of a dark night falling (a noit'escura se fez) and of a dark prison (a carcer escura); the Crónica Troiana has a man who could see at night, however dark it was, as at midday, and a storm “ugly, dark and frightful” (fea et escura et pauorosa).[10]

Semantic evolution

The derivatives escurecer “to darken” (13th century), escuridão, escuridade and escureza (14th century) show the word in full use in the medieval language.[3] Folqman (1755) has questão muito escura “a very obscure question”.[11] Morais (1813) records azul escuro “dark blue”, dia escuro “an overcast day”, thoughts that are hard to understand and, figuratively, sad ones.[12] Figueiredo (1899) adds “of low birth” and “faint, hard to hear or make out”.[13]

As a noun, escuro is darkness or a dark place, and no escuro is used of people left without knowledge.[2] In Brazil it is also used of a Black or mixed-race person.[2][14] In Rio Grande do Sul os escuros was a nickname for 19th-century politicians who always wore black.[15] The word passed into Saramaccan as sugúu.[1]

Timeline

  • 13th century – first records;[2][3] escurecer also dates from this century.[2][3]
  • 14th century – escuridão, escuridade and escureza;[3] scuricimento in the Horto do Esposo.[3]
  • 15th century – the spelling scuro.[2]
  • c. 1430 – the earliest record in the CTA prose corpus, the Horto do Esposo (witness 1390–1437).[16]
  • 1697 – Pereira glosses the noun with Latin tenebrae “darkness”.[17]
  • 1755 – Folqman's questão muito escura.[11]
  • 1813 – Morais records azul escuro and dia escuro.[12]
  • 1899 – Figueiredo calls it an alteration of obscuro.[13]

Meanings

Adjective

  1. dark; with little or no light: Entrou num corredor escuro.[2][5][1]
  2. Of a colour: deep, close to black: verde escuro.[2][5]
  3. Of the sky or the day: overcast.[18][12]
  4. (figurative) Sad, gloomy.[2]
  5. (figurative) Surrounded by suspicion; shady.[2][19]
  6. (figurative) Hard to understand, obscure (obscuro).[2][20]
  7. Hard to hear or make out; faint.[2][13]
  8. (dated) Of humble birth.[13][19]

Noun

  1. darkness; a dark place.[2][1]
  2. (Brazil) A Black or mixed-race person.[2][14]

Word family

  • escurecer
  • escurecimento
  • escuridão
  • escuridade
  • escureza
  • escurentar

Usage notes

No escuro, like às escuras, also means “without knowledge, in ignorance”.[2]

References

  1. ^ a b c d e f g h i j k Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. escuro
  3. ^ a b c d e f g Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. escuro
  4. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. escuro
  5. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. escuro
  6. ^ a b c Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 187
  7. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. s.v. obscurus
  8. ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 318
  9. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ 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. escuro
  11. ^ a b Folqman, Carlos (1755), Diccionario portuguez, e latino, Lisboa: Régia Officina Silviana (CLP transcription, Universidade de Aveiro), p. s.v. escuro
  12. ^ a b c Silva, António de Morais (1813), Diccionario da lingua portugueza, 2nd ed., 2 vols., Lisboa: Typographia Lacerdina, p. 1, 746
  13. ^ a b c d Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. 542
  14. ^ 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. escuro
  15. ^ Schlee, Aldyr Garcia (2019), Dicionário da Cultura Pampeana Sul-Rio-Grandense, 2 vols., Pelotas: Fructos do Paiz, p. s.v. escuro
  16. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. escuro
  17. ^ 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. escuro
  18. ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 3818
  19. ^ a b 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. escuro
  20. ^ Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. escuro

Related etymologies

Cite this entry

“Escuro.” Etymologically, 15 Nov. 2026, etymologically.com/pt/escuro. Accessed 16 Nov. 2026.

Last edited on . ·