Etymologically

Etymology and origin of the Portuguese word firmar

Confidence
Established
Formation
Inherited
First attested
1200s a cantiga of Pero da Ponte More words from the 13th century
Inherited from
Latin firmo
Ultimate origin
Proto-Indo-European *dʰer-
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
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 affirmō ← 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

Pronunciation

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

Forms

firmar (first-person singular present firmo, first-person singular preterite firmei, past participle firmado)[1]

Etymology

It is inherited from Latin firmō (“to make firm, strengthen; to confirm”), written Old Galician-Portuguese firmar in the oldest texts.[2][3][4][5] The Latin verb is formed from firmus (“firm, stable”).[6][1] It kept its ⟨i⟩ in Portuguese and Spanish: the REW brackets Spanish firmar and the Portuguese verb as not regular popular outcomes, and García de Diego calls the Spanish verb learned beside the popular hirmar “to secure”.[7][8]

The same Latin verb is Galician firmar, Catalan fermar, French fermer and Italian fermare.[7][1] In French it came to mean “to close”.[9]

The Latin adjective goes back to Proto-Italic *fermos, from Proto-Indo-European *dʰer-mo-, a derivative of *dʰer- (“to hold”).[10][1]

Earliest recorded meaning

Houaiss's earliest dates, firmadas in 1108 and firmar in 1159, come from Machado's records, which are Latin charters.[2] In Galician-Portuguese verse, a cantiga of Pero da Ponte in the Cancioneiro da Ajuda says Deus fez e firmou o mundo “God made the world and set it firm”, and the same songbook uses the verb for “to affirm”.[4] The Crónica Troiana uses it for confirming an agreement or a love.[4]

Semantic evolution

The physical sense “make firm, fix” and the legal sense “confirm, ratify” were both present in the medieval language.[4] Viterbo's Elucidário records old legal uses: to swear an oath of calumny, and to prove.[11] Morais (1789) gives firmar a carta “to sign one's name to a letter or deed in confirmation of it”, the sense behind firma “signature”.[12][2] Feijó (1734) warned against the form frimar.[13]

Modern dictionaries add figurative uses: to settle an opinion, to establish oneself in a position, and, of the weather, to become settled.[2][14]

Timeline

  • 1108 – Latin charters have firmadas;[2] firmar in 1159.[2]
  • 13th century – firmar in Galician-Portuguese texts.[2][3]
  • 1577 – first record in the Post Scriptum letters, as firmado.[15]
  • 1697 – Pereira's Thesouro lists the verb.[16]
  • 1712–1728 – Bluteau gives firmar os dentes abalados “to make loose teeth firm”.[17]
  • 1734 – Feijó prescribes firmar, not frimar.[13]
  • 1789 – Morais records firmar a carta, to sign a deed.[12]

Meanings

Verb

  1. (transitive and reflexive) To make or become firm (firme), stable or fixed: firmou bem o poste no chão.[2][18][1]
  2. (transitive and reflexive) To lean (apoiar) or prop firmly against something; to steady oneself.[2][19]
  3. To fix (the eyes, the attention) on something.[2][18]
  4. To establish; to conclude (an agreement or treaty); to ratify, sanction.[2][20]
  5. (transitive and reflexive) To strengthen, consolidate; to settle (an opinion, a reputation).[2][14]
  6. (reflexive) To become recognised as: firmou-se como cantora.[2]
  7. (transitive and reflexive) To base on; to rest (an argument) on.[2][21]
  8. (intransitive and reflexive) Of the weather, to become settled.[2]
  9. To sign, put one's signature (firma) to: firmar uma escritura.[2][20][1]

Word family

  • firma

References

  1. ^ a b c d e f g h i j 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 Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. firmar
  3. ^ a b Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. firmar
  4. ^ a b c d 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. firmar
  5. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. firmar
  6. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  7. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 3318
  8. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. firmare
  9. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. fermer
  10. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  11. ^ Viterbo, Joaquim de Santa Rosa de (1798–1799), Elucidario das palavras, termos e frases que em Portugal antiguamente se usárão, 2 vols., Lisboa: Simão Thaddeo Ferreira, p. 1, 465
  12. ^ a b Silva, António de Morais (1789), Diccionario da lingua portugueza composto pelo padre D. Rafael Bluteau, reformado, e accrescentado, 2 vols., Lisboa: Simão Thaddeo Ferreira, p. 1, 618
  13. ^ a b Feijó, João de Morais Madureira (1734), Orthographia, ou Arte de escrever, e pronunciar com acerto a lingua portugueza, Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. firmar
  14. ^ a b Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. firmar
  15. ^ 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. firmar
  16. ^ 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. firmar
  17. ^ Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. firmar
  18. ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. firmar
  19. ^ 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. firmar
  20. ^ 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. firmar
  21. ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 4317

Related etymologies

Cite this entry

“Firmar.” Etymologically, 15 Nov. 2026, etymologically.com/pt/firmar. Accessed 16 Nov. 2026.

Last edited on . ·