Etymologically

Etymology and origin of the Portuguese word afirmar

Confidence
Established
Formation
Borrowing
First attested
1300s spelt afirmar and affirmar More words from the 14th century
Borrowed from
Latin affirmo
Ultimate origin
Latin firmus
Etymology tree
inherited borrowed derived
Latin fīrmus
French ferme
Romanian fermă
Italian fermo
Latin firmō
French fermer
Italian fermare
Portuguese firmar
Spanish firmar
Italian firmare
Latin affirmō
Italian affermare
Portuguese afirmar
Romanian afirma
Spanish afirmar
From the same root
Latin firmē ← fīrmus
Latin firmitās ← fīrmus
Latin firmiter ← fīrmus
Latin firmitūdō ← fīrmus
Latin īnfirmus ← fīrmus
English firm ← firmō
Italian firma ← firmō
Latin cōnfirmō ← firmō
Latin firmāmentum ← firmō
Latin offirmō ← firmō
Spanish firma ← firmō
French enfermer ← fermer
French refermer ← fermer
Italian fermata ← fermare
Romanian firmă ← firmare
English affirm ← affirmō
Latin affirmātiō ← affirmō
Latin affirmātīvus ← affirmō

Pronunciation

  • Brazil: /a.fiʁˈma(ʁ)/, [a.fiɦˈma(h)][1]
  • São-Paulo: /a.fiɾˈma(ɾ)/[1]
  • Rio-de-Janeiro: /a.fiʁˈma(ʁ)/, [a.fiʁˈma(χ)][1]
  • Caipira: /a.fiɻˈma(ɻ)/[1]

Forms

afirmar (first-person singular present afirmo, first-person singular preterite afirmei, past participle afirmado)[1] Old texts write afirmar and affirmar (14th century) and afyrmar (15th).[2] The etymological spelling affirmar lasted until the 20th-century reforms;[3][1] Figueiredo (1899) enters afirmar as the same word as affirmar.[3][1]

Etymology

It is borrowed from Latin affirmō (“to strengthen; to assert”), a learned word.[2][4][5][1] Nascentes calls it semi-learned, and the glossary of the Crónica Geral a learned derivative.[6][7] The Latin verb is formed from ad- and firmō (“to strengthen, make firm”), from the adjective firmus (“firm”).[8][1][9]

The same Latin verb is Italian affermare, Old French afermer and Old Occitan afermar; in Spanish the inherited form was Old Spanish ahirmar, and Spanish afirmar is learned like the Portuguese word.[10][11] The old form was remade in the 13th century as French affirmer.[9]

Earliest recorded meaning

Houaiss dates the first record to the 14th century, from Cunha's index of medieval Portuguese.[2] Machado quotes a 14th-century text: e quando el viu que lho afirmavam de verdade “and when he saw that they assured him of it as the truth”.[5] The Crónica Troiana has it both for asserting (el afirmou que aynda auya de uijr tal sazon “he affirmed that a time would yet come”) and for confirming agreements.[7]

Semantic evolution

The Crónica Geral shows the range of the medieval verb: to confirm a law, to prove, to assure, to settle a pact firmly, and even to come to an end.[7] Cunha dates the word to the 16th century, with both senses “to make firm” and “to state firmly”.[4] Cardoso (1569) and Barbosa (1611) render it with Latin assevero and affirmo.[12][13]

Vieira (1871–1874) records the physical sense “to fix, to steady” and the reflexive afirmar-se “to hold oneself firm”.[14] The DLP now marks “to make firm” as obsolete.[15] From the reflexive came “to assert oneself, to become established”, and the physical sense gave afirmar a vista “to fix one's gaze”; in northern Portugal afirmar-se means to look closely.[2][16][17][18] Michaelis records a hunting sense: to train a dog to follow only one kind of game.[19]

Timeline

  • 14th century – first records, as afirmar and affirmar.[2][5]
  • 15th century – the spelling afyrmar.[2]
  • 1525 – afirmar in the Memorial da Infanta Santa Joana.[20]
  • 1542 – affirmo in a private letter.[21]
  • 1569 – Cardoso glosses it with assevero and affirmo.[12]
  • 1611 – Barbosa adds afirmadamente.[13]
  • 1874 – first record of reafirmar.[22]

Meanings

Verb

  1. To make firm; to consolidate, establish;[2][16][1] (pronominal) to become established: Afirmou-se como a melhor da turma.[2][16][1]
  2. To state firmly; to assert, affirm, declare: Ela afirma que nunca esteve lá.[2][16][1]
  3. To confirm, attest; to vouch for the truth or existence of something.[2][16][1]
  4. (pronominal) To show oneself independent or adult; to assert one's own will or identity.[2][17]
  5. (pronominal) To make a name for oneself, to earn one's place.[2][1]
  6. To fix (the gaze); (pronominal) to look closely.[16][17]
  7. (hunting) To train (a dog) to follow only one kind of game.[19]

Word family

  • reafirmar
  • afirmador
  • afirmante

References

  1. ^ a b c d e f g h i j k l m n Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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. afirmar
  3. ^ a b Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. 35
  4. ^ a b Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. afirmar
  5. ^ a b c Machado, José Pedro (1987), Dicionário etimológico da língua portuguesa, 4th ed., 5 vols., Lisboa: Livros Horizonte, p. s.v. afirmar
  6. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. afirmar
  7. ^ 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. afirmar
  8. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. affirmo
  9. ^ a b Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. affirmer
  10. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 260a
  11. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954)
  12. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. afirmar
  13. ^ a b Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. afirmar
  14. ^ Vieira, Frei Domingos (1871–1874), Grande Diccionario Portuguez ou Thesouro da lingua portugueza, 5 vols., Porto: Ernesto Chardron e Bartholomeu H. de Moraes, p. 1, 205
  15. ^ 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. afirmar
  16. ^ a b c d e f Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. afirmar
  17. ^ a b c Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 305
  18. ^ 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. afirmar
  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. afirmar
  20. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. afirmar
  21. ^ 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. afirmar
  22. ^ Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. reafirmar

Related etymologies

Cite this entry

“Afirmar.” Etymologically, 15 Nov. 2026, etymologically.com/pt/afirmar. Accessed 16 Nov. 2026.

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