Etymologically

Etymology and origin of the Portuguese word juramento

Confidence
Established
Formation
Inherited
First attested
1228 a document, spelt iuramento More words from the 13th century
Inherited from
Latin iuramentum
Ultimate origin
Latin iūs
Etymology tree
inherited borrowed derived
Latin iūs
French jus
Latin iūrō
French jurer
Italian giurare
Romanian jura
Spanish jurar
Latin iūrāmentum
Portuguese juramento
Romanian jurământ
Spanish juramento
Italian giuramento
From the same root
Latin iniūriā ← iūs
Latin iūdex ← iūs
Latin iure ← iūs
Latin iūrgō ← iūs
Latin iūriscōnsultus ← iūs
Latin iūrisdictiō ← iūs
Latin iūrisprūdentia ← iūs
Latin iūsiūrandum ← iūs
Latin iūstitium ← iūs
Latin iūstus ← iūs
Latin periūrus ← iūs
Latin abiūrō ← iūrō
Latin adiūrō ← iūrō
Latin coniūrō ← iūrō
Latin ēiūrō ← iūrō
Latin iūrāta ← iūrō
Latin iūrātor ← iūrō
Latin iūrātus ← iūrō
Latin pēierō ← iūrō
French jureur ← jurer
Italian giurato ← giurare
Romanian înjura ← jura
Romanian jurat ← jura
Romanian jurător ← jura

Pronunciation

  • Brazil: /ʒu.ɾaˈmẽ.tu/[1]
  • Portugal: /ʒu.ɾɐˈmẽ.tu/[1]

Forms

juramento m (plural juramentos)[1] Old Galician-Portuguese wrote iuramento, juramento and juramẽto.[2][3][4]

Etymology

It is inherited from Late Latin iūrāmentum (“oath”), written Old Galician-Portuguese iuramento in the oldest texts.[5][3][6][1][2] Wiktionary notes that it can also be analysed as jurar with the suffix -mento.[1]

The same Latin word is Galician xuramento, Spanish juramento, Catalan jurament, French jurement, Italian giuramento and Romanian jurământ.[7][1] The Spanish word is recorded from 1045.[8]

The Latin noun is formed from Latin iūrō (“to swear”) with the suffix -mentum, and the verb from iūs (“law; ritual formula”).[1][9][10] Wiktionary traces it further to Proto-Indo-European *h₂yew-.[1]

Earliest recorded meaning

Latin laws of 1188–1230 already have qui iuramento fecerit “who has sworn an oath”.[2] In the vernacular a document of 1228 has ouueron per sy iuramento “they took an oath”, and the inquiries of 1258–1261 order a matter to be examined por juramento, under oath.[2] The sense is the same as today: a solemn statement or promise made with God as witness.[2][4]

Semantic evolution

Medieval notarial books describe the oath as taken with a hand on the Gospels and the sign of the cross: in Noia in 1332 a party swears per este notario aos Santos Auãgeos “by this notary on the Holy Gospels”.[4] The Crónica Troiana uses it for the sworn pledges of a treaty.[4]

Bluteau (1712–1728) defines it as calling God to witness that one speaks the truth, explicitly or by swearing by his creatures.[11] Morais (1789) distinguishes the assertory and promissory oath, the threatening oath, and the judicial, extrajudicial and suppletory oaths of the courts.[12] Modern Portuguese adds the military juramento de bandeira and the Hippocratic oath of new doctors.[13][14][6]

Timeline

  • 1188–1230 – iuramento in Latin laws.[2]
  • 1228 – ouueron per sy iuramento in a vernacular document.[2]
  • 1261 – por juramento in the royal inquiries.[2]
  • 1317 – Machado's first record.[2]
  • 1332 – oaths on the Gospels in the notarial book of Noia.[4]
  • 1446 – first record in the CTA corpus, in the Dez Mandamentos da Ley de Moisés.[15]
  • 1789 – Morais lists the kinds of oath in law.[12]

Meanings

Noun

  1. The act of swearing (jurar); a jura.[3][6][14]
  2. A solemn statement or promise that calls on something sacred, or a recognised moral value, as a pledge of good faith; an oath.[3][6][13][1]
  3. A solemn commitment made in public, and the formula in which it is spoken.[3][13][14]
  4. (military) The commitment of soldiers to defend their country, and the ceremony in which they make it: juramento de bandeira.[13][14]
  5. (law) A sworn statement before a judge, such as the litigant's oath that he does not sue in bad faith.[13][14][16]

Usage notes

The juramento hipocrático is the code of medical ethics sworn by new doctors, and a juramento de sangue is a blood pact.[3][6]

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 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. iuramento
  3. ^ a b c d e f Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. juramento
  4. ^ 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. juramento
  5. ^ Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. juramento
  6. ^ a b c d e Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. juramento
  7. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 4629
  8. ^ Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. jurar
  9. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. iūrō
  10. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. jurer
  11. ^ Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. juramento
  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, 747
  13. ^ a b c d e 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. juramento
  14. ^ a b c d e Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 5508
  15. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. juramento
  16. ^ 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. juramento

Related etymologies

Cite this entry

“Juramento.” Etymologically, 15 Nov. 2026, etymologically.com/pt/juramento. Accessed 16 Nov. 2026.

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