Etymology and origin of the Portuguese word seis
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1249 More words from the 13th century
- Inherited from
- Latin sex
- Ultimate origin
- Proto-Indo-European *swéḱs
Etymology tree
Pronunciation
Forms
seis m or f[1] Old Galician-Portuguese also wrote seys and the Latinising sex, and Houaiss records sseys in the 14th century.[2][3][1]
Etymology
It is inherited from Latin sex (“six”), written Old Galician-Portuguese seis and Old Galician-Portuguese seys in the oldest texts.[3][2][1] Latin pronounced the word /seks/; in Portuguese the velar /k/ of the group /ks/ was vocalised to the glide /j/, which gives the diphthong /ej/ of the modern word.[3]
The same Latin word is Galician seis, Spanish seis, Catalan sis, French six, Italian sei and Romanian șase.[1][4][5]
The Latin word goes back to *seks, from *swéḱs.[6][1] Its cognates include ἕξ (héx), षष् (ṣaṣ) and the English word six.[1] De Vaan writes the reconstruction with the initial /s/ in brackets, since some languages point to a form beginning /sw-/ and others to one beginning /w-/.[6][5]
Earliest recorded meaning
Houaiss dates the word to 1249, from a text in the collection of old laws he cites as Leges.[3] In the Cantigas de Santa Maria of the second half of the 13th century a miracle happens a cabo de seis dias “after six days”, and the Galician Crónica Troiana speaks of the six ages of the world (as seis ydades).[7]
Semantic evolution
The numeral has kept its meaning; what grew was its use as a noun.[3] Bluteau (1712–1728) still glosses it only as the Latin numeral, with compounds such as seiscentos “six hundred” and seis mil.[8] The original Caldas Aulete adds the noun: the digit 6, and the card, die face or domino tile with six spots, noting that as a noun it can be used in the plural.[9] Modern dictionaries also use it for the sixth item of a series and for a mark of six in an examination.[3][10]
The word passed into the Portuguese-based creoles: sais in Kabuverdianu, sês in Macanese and seis in Papiamentu.[1]
Timeline
- 1249 – Houaiss's first record, from the Leges.[3]
- 13th century – seis in the Cantigas de Santa Maria;[7][2] Cunha also records sex in this century.[7][2]
- 14th century – the spellings seys and sseys.[2][3]
- c. 1430 – seis in the Horto do Esposo (copied 1390–1437).[11]
- 1569 – Cardoso's Portuguese–Latin dictionary renders Seis by Latin sex.[12]
- 1712–1728 – Bluteau lists seiscentos, seis mil and seis vezes.[8]
- 1881 – the original Caldas Aulete gives the noun senses of the digit and of the card or die face.[9]
Meanings
Numeral
- six, five plus one: Comprou seis laranjas.[3][13][1]
- sixth, after a noun, the sixth of a series: a página seis.[3][14]
Noun
- The number six, and the digit 6.[3][15][1]
- A playing card, die face or domino tile with six spots: o seis de copas.[10][13]
- A mark of six in an examination or assessment.[10]
Word family
- seisavo
Related words
- seiscentos
- sexto
- sexta
- sexagésimo
- sexteto
- Latin sex
- Galician seis
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 Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. seis
- ^ 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. seis
- ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 5, 192
- ^ a b Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. six
- ^ a b 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. sex
- ^ 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. seis
- ^ a b Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. seis
- ^ a b Aulete, Francisco Júlio Caldas, Dicionário contemporâneo da língua portuguesa (1st ed. 1881), online as Aulete Digital, Rio de Janeiro: Lexikon, https://aulete.com.br, p. s.v. seis
- ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. seis
- ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. seis
- ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. seis
- ^ 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. seis
- ^ Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. seis
- ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 8370
Related etymologies
Cite this entry
“Seis.” Etymologically, 15 Nov. 2026, etymologically.com/pt/seis. Accessed 16 Nov. 2026.
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