Etymologically

Etymology and origin of the Portuguese word pois

Confidence
Probable
Formation
Inherited
First attested
1200s Cantigas de Santa Maria More words from the 13th century
Inherited from
Latin post
Ultimate origin
Proto-Indo-European *pósti
Etymology tree
inherited borrowed derived
Latin post
Portuguese pois
Romanian păi
Spanish pues
From the same root
Latin pōmērium ← post
Latin pōne ← post
Latin posteā ← post
Latin posthāc ← post
Latin postīcus ← post
Latin postilla ← post
Latin postmodo ← post
Latin postquam ← post
Latin postumus ← post
Romanian poimâine ← post

Pronunciation

  • Brazil: /ˈpojs/, [ˈpoɪ̯s][1]
  • Rio-de-Janeiro: /ˈpojʃ/, [ˈpoɪ̯ʃ][1]
  • Portugal: /ˈpojʃ/[1]
  • /ˈpøʃ/[1]

Forms

pois (not comparable)[1] Medieval texts write pois and poys.[2][1]

Etymology

It is inherited from Latin post (“behind, after”), written Old Galician-Portuguese pois and Old Galician-Portuguese poys in the oldest texts, but the details are disputed.[2][3][1] Machado, Nascentes and Cunha derive it from the Latin word, and all of them note that it does not explain the /i/.[2][4] Cunha also suggests a Latin *posti, from *postius, a shortening of postea (“afterwards”).[3] Carolina Michaëlis likewise thought of a popular Latin adverb of this kind.[5] Nascentes in 1955 took it from the Latin adverb meaning “afterwards” itself, and Wiktionary from a Vulgar Latin *pos.[6][1] The French cognate is explained in the same way, from the Vulgar Latin form, perhaps shaped after melius (“better”).[7]

The same Latin word is Galician pois, Spanish pues, French puis, Italian poi and Romanian apoi, the last with ad before it.[1][8] Corominas notes that medieval Portuguese also had Old Galician-Portuguese pos, almost only as a temporal preposition.[9]

The Latin word continues Old Latin poste, from *posti, from Proto-Indo-European *pósti.[1]

Earliest recorded meaning

Houaiss dates it to the 13th century from Cunha's slips.[2] Lorenzo's chronology quotes the Cantigas de Santa Maria, where it is still temporal: levoo a ssa casa, pois se foron as gentes “he took him to his house, after the people had left”.[5] The cantigas also use it as a causal conjunction, “because, since”, and pois que with the future subjunctive for “as soon as”.[5][10]

Semantic evolution

Medieval Portuguese used the word as an adverb, “then, afterwards”, and as a conjunction of time, cause and consequence.[10][5] The temporal sense gave way to depois, and the modern word is a conjunction of cause (“because”) and conclusion (“therefore”), and a discourse particle.[2][11] Cardoso in 1569 still translates pois or pois que with Latin quando, but Pereira in 1697 gives ergo.[12][13] Bluteau calls it a particle used in many ways and illustrates the causal and concessive uses.[14] In European Portuguese it is used alone as an answer of assent, “yes, quite”.[2][15]

Timeline

  • 13th century – first records, as pois and poys.[2]
  • 13th century – pois se foron as gentes in the Cantigas de Santa Maria.[5]
  • 1380–1425 – pois in the Santiago fragment of the Flos Sanctorum.[16]
  • 1569 – Cardoso translates pois and pois que with Latin quando.[12]
  • 1697 – Pereira translates it with Latin ergo.[13]
  • 1712–1728 – Bluteau calls it a particle of many uses.[14]

Meanings

Conjunction

  1. because, since, introducing an explanation: Leva o guarda-chuva, pois vai chover.[2][17][1]
  2. therefore, so, introducing a conclusion, usually after the verb: Está cansado e não pode, pois, continuar.[2][11]
  3. In that case, then: Não gostas? Pois não comas.[2][15][1]
  4. But, however, marking a contrast with what was said: Tu estás calmo? Pois eu estou nervoso.[2][11]

Adverb

  1. (Portugal) Yes, of course, as a reply of assent.[2][15][1]
  2. Reinforcing a question or a doubt: pois não?[2][18]

Usage notes

Pois é expresses confirmation or resignation, and pois claro agreement.[17][15] In Brazil pois não is the formula of a shop assistant or clerk offering help, and also means “certainly”.[17][19]

References

  1. ^ a b c d e f g h i j k l m Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. pois
  3. ^ a b Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. pois
  4. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. pois
  5. ^ a b c d e 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. pois
  6. ^ Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 406
  7. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. puis
  8. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 6684
  9. ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 683
  10. ^ a b 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. pois
  11. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. pois
  12. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. pois
  13. ^ a b 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. pois
  14. ^ 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. pois
  15. ^ a b c d Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 7288
  16. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. pois
  17. ^ a b c Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. pois
  18. ^ 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. pois
  19. ^ 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. pois

Related etymologies

Cite this entry

“Pois.” Etymologically, 15 Nov. 2026, etymologically.com/pt/pois. Accessed 16 Nov. 2026.

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