Etymologically

Etymology and origin of the Portuguese word obrigar

Confidence
Established
Formation
Inherited
First attested
1200s spelt obligar More words from the 13th century
Inherited from
Latin obligo
Ultimate origin
Latin ligō
Etymology tree
inherited borrowed derived
Latin ligō
Aromanian leg
Catalan lligar
French lier
Spanish liar
Italian legare
Portuguese liar
Portuguese ligar
Romanian lega
Spanish ligar
Latin obligō
Portuguese obrigar
French obliger
Romanian obliga
Spanish obligar
From the same root
Latin alligō ← ligō
Latin circumligō ← ligō
Latin colligō ← ligō
Latin dēligō ← ligō
Latin illigō ← ligō
Latin ligāmen ← ligō
Latin ligāmentum ← ligō
Latin ligātūra ← ligō
Latin religō ← ligō
English lea ← lier
French liaison ← lier
French liement ← lier
French relier ← lier
Italian lega ← legare
Portuguese desligar ← ligar
Romanian câșlegi ← lega
Spanish liga ← ligar
Latin obligātiō ← obligō
Latin obligātōrius ← obligō
Latin obligātus ← obligō

Pronunciation

  • Brazil: /o.bɾiˈɡa(ʁ)/, [o.bɾiˈɡa(h)][1]
  • São-Paulo: /o.bɾiˈɡa(ɾ)/[1]
  • Rio-de-Janeiro: /o.bɾiˈɡa(ʁ)/, [o.bɾiˈɡa(χ)][1]
  • Caipira: /o.bɾiˈɡa(ɻ)/[1]

Forms

obrigar (first-person singular present obrigo, first-person singular preterite obriguei, past participle obrigado)[1] The 13th-century texts write obligar; the form with -r-, obrigamos “we bind ourselves”, is recorded in 1344.[2][3] Feijó (1734) lists the popular spelling oubrigar beside obrigar.[4]

Etymology

It is inherited from Latin obligō (“to tie up; to bind by a duty”), written Old Galician-Portuguese obligar and later Old Galician-Portuguese obrigar in the oldest texts.[2][3][5][1] Wiktionary considers it a semi-learned word, taken from the written language rather than handed down by speech alone.[1] The Latin /l/ after the /b/ became /r/, as the dated forms show: the spelling with ⟨l⟩ in the 13th century, with ⟨r⟩ by 1344.[2]

The same Latin verb is Spanish obligar, Catalan obligar, Italian obbligare and French obliger.[6][7]

The Latin word is formed from ob- (“towards, against”) and ligō (“to bind, fasten”).[8][1] Houaiss glosses it “to tie on all sides; to bind morally; to be bound to someone by a duty”.[2] Wiktionary takes the simple verb back to Proto-Indo-European *leyǵ- (“to bind”).[1]

Earliest recorded meaning

Houaiss dates the verb to the 13th century, in the sense “to bind someone by a legal or moral duty”.[2] The Crónica Troiana uses it as a reflexive, “to bind oneself to do something”: obrigome a atanto que se depoys for mentira que me deytedes en hun gran fogo “I bind myself to this: that if it later proves a lie, you throw me into a great fire”.[9]

Semantic evolution

The legal sense came first, and with it the reflexive “to commit oneself” and the use of property as security: Houaiss and Priberam give “to pledge, mortgage” (obrigar as joias, obrigar os bens).[2][10] Folqman's dictionary of 1755 has obrigar todos os seus bens “to mortgage all one's goods” beside obrigar a alguem a fazer alguma cousa “to force someone to do something”.[11] Morais (1813) separates the two: “to impose an obligation” and “to use force, violence, constraint”, his example being a man made to sign with a pistol in his hand.[12]

A milder sense grew out of the moral one: to bind someone by gratitude or affection, to put them in one's debt; the original Caldas Aulete quotes Garrett for it.[13][2]

Timeline

  • 1200s – first records, spelt obligar.[2][3]
  • 1344 – the form with -r-, obrigamos.[2]
  • 1569 – Cardoso's Portuguese–Latin dictionary renders Obrigar by Latin obligo.[14]
  • 1611 – Barbosa adds the participle obrigada cousa “a thing bound, pledged”.[15]
  • 1734 – Feijó notes the popular spelling oubrigar.[4]
  • 1755 – Folqman lists the senses “to mortgage” and “to compel”.[11]
  • 1813 – Morais defines the verb as “to impose an obligation” and “to use force”.[12]

Meanings

Verb

  1. To bind by a legal or moral obligation;[2][16] (reflexive) to commit oneself: O acordo obriga as duas partes.[2][16]
  2. To force, compel; to make someone do something by pressure or necessity: A chuva obrigou-nos a voltar.[2][1]
  3. (figurative) To leave no choice but a certain action; to urge, impel.[16][1]
  4. To subject to a condition; to expose: obrigar alguém ao ridículo.[2]
  5. To give as security; to pledge, mortgage.[2][10]
  6. (reflexive) To run into debt, pledging one's goods.[2]
  7. To bind by gratitude or affection; to oblige, win over.[2][17]
  8. To subdue, master.[2]

Word family

  • obrigação
  • obrigado
  • obrigatório
  • obrigatoriedade
  • desobrigar

References

  1. ^ a b c d e f g h i j k 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 q Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. obrigar
  3. ^ a b c Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. obrigar
  4. ^ 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. obrigar
  5. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. obrigar
  6. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 6012a
  7. ^ Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 359
  8. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. obligō
  9. ^ 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. obrigar
  10. ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. obrigar
  11. ^ a b Folqman, Carlos (1755), Diccionario portuguez, e latino, Lisboa: Régia Officina Silviana (CLP transcription, Universidade de Aveiro), p. s.v. obrigar
  12. ^ a b Silva, António de Morais (1813), Diccionario da lingua portugueza, 2nd ed., 2 vols., Lisboa: Typographia Lacerdina, p. 2, 356
  13. ^ 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. obrigar
  14. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. obrigar
  15. ^ Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. obrigar
  16. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. obrigar
  17. ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 6604

Related etymologies

Cite this entry

“Obrigar.” Etymologically, 15 Nov. 2026, etymologically.com/pt/obrigar. Accessed 16 Nov. 2026.

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