Etymologically

Etymology and origin of the Portuguese word confirmar

Confidence
Established
Formation
Borrowing
First attested
1254 More words from the 13th century
Borrowed from
Latin confirmo
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 cōnfirmō
Italian confermare
French confirmer
Romanian confirma
Portuguese confirmar
Spanish confirmar
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 firmāmentum ← firmō
Latin offirmō ← firmō
Spanish firma ← firmō
French enfermer ← fermer
French refermer ← fermer
Italian fermata ← fermare
Romanian firmă ← firmare
Latin cōnfirmātiō ← cōnfirmō
Romanian confirmare ← confirma

Pronunciation

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

Forms

confirmar (first-person singular present confirmo, first-person singular preterite confirmei, past participle confirmado)[1] Houaiss records cõfirmar in the 13th century and comffyrmar in 1292.[2] The Crónica Geral writes both confirmar and cõfirmar.[3]

Etymology

It is borrowed from Latin cōnfirmō (“to strengthen, consolidate, confirm”), by the learned route.[2][4][5][1] The Latin verb is formed con- + firmō (“to strengthen”), from firmus (“firm, stable”).[6][7][1]

The same Latin verb is Galician confirmar, Spanish confirmar, Catalan confirmar, French confirmer and Italian confermare.[8][7][1] In French the older confermer was replaced in the 16th century by the form remade on Latin.[7]

Earliest recorded meaning

Houaiss's first date is 1254, after Cunha's index of medieval Portuguese.[2] Lorenzo's record of that year is the charter formula roboro et confirmo et octorgo la carta.[3] A Latin charter of 983 already has the participle confirmada.[3] In a cantiga d'escarnho of Airas Perez Vuitoron someone fez mandado do Papa e confirmou-lh' o Esleito “did the Pope's bidding and confirmed the bishop-elect for him”.[3][9]

Semantic evolution

In Latin the verb first meant to strengthen the body or a thing, then to assure and to certify;[6][7] Christian writers made it a word of the liturgy.[6][7] Medieval Latin used it for confirming an earlier charter.[10] The medieval Portuguese texts have both senses: the Cantigas de Santa Maria say a cleric was na fe confirmado “strengthened in the faith”, and the Crónica Geral tells how a king confirmou a ley dos godos “confirmed the law of the Goths”.[3]

Morais (1813) defines it as to revalidate what is approved, to corroborate with new arguments, and as a synonym of chrismar “to confirm in the sacrament”.[11] Modern dictionaries add proving a hypothesis true and, in the reflexive, coming true; the sense “to make firmer” is now dated.[2][12][13]

Timeline

  • 983 – a Latin charter writes confirmada.[3]
  • 1254 – first record, after Cunha's index of medieval Portuguese.[2]
  • 13th century – the spelling cõfirmar; confirmação and confirmador also appear.[2][4]
  • 1292 – the spelling comffyrmar.[2]
  • 1569 – Cardoso renders it by Latin firmo and confirmo.[14]
  • 1813 – Morais gives the sense “to confirm in the sacrament”, and confirmativo is first recorded.[11][4]

Meanings

Verb

  1. To state the truth or exactness of something said or believed before; to corroborate (corroborar): O vizinho confirmou a versão da polícia.[2][15][1]
  2. To ratify or validate an act or decision: O tribunal confirmou a sentença.[2][12]
  3. To show to be true; to prove: Os resultados confirmaram a hipótese.[2][15]
  4. To keep up, maintain;[15][13] (dated) to make firmer.[15][13]
  5. (religion) To administer the sacrament of confirmation (confirmação); to chrism (crismar).[12][15][16]
  6. (reflexive) To come true, be borne out: Confirmou-se a previsão.[2][13][16]

Word family

  • confirmação
  • confirmador
  • confirmante
  • confirmativo
  • confirmatório

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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. confirmar
  3. ^ a b c d e f 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. confirmar
  4. ^ a b c Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. confirmar
  5. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. confirmar
  6. ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. cōnfirmō
  7. ^ a b c d e Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. confirmer
  8. ^ Real Academia Española; Asociación de Academias de la Lengua Española (2014–), Diccionario de la lengua española, 23rd ed., online version 23.8, https://dle.rae.es, p. s.v. confirmar
  9. ^ 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. confirmar
  10. ^ Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill, p. s.v. confirmare
  11. ^ a b Silva, António de Morais (1813), Diccionario da lingua portugueza, 2nd ed., 2 vols., Lisboa: Typographia Lacerdina, p. 1, 442
  12. ^ a b c 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. confirmar
  13. ^ a b c d Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 2328
  14. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. confirmar
  15. ^ a b c d e Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. confirmar
  16. ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. confirmar

Related etymologies

Cite this entry

“Confirmar.” Etymologically, 15 Nov. 2026, etymologically.com/pt/confirmar. Accessed 16 Nov. 2026.

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