Etymologically

Etymology and origin of the Portuguese word oportuno

Confidence
Established
Formation
Borrowing
First attested
1587 before 1587, spelt opportuno More words from the 16th century
Borrowed from
Latin opportunus
Ultimate origin
Latin portus
Etymology tree
inherited borrowed derived
Latin portus
Italian porto
Portuguese porto
Spanish puerto
French port
Romanian port
Latin opportūnus
English opportune
Portuguese oportuno
Spanish oportuno
From the same root
Latin angiportum ← portus
Latin importūnus ← portus
Latin Portūnus ← portus
Italian aeroporto ← porto
Portuguese aportar ← porto
Spanish aportar ← puerto
French aéroport ← port
Latin opportune ← opportūnus
Latin opportūnitās ← opportūnus

Pronunciation

  • Brazil: /o.poʁˈtũ.nu/, [o.pohˈtũ.nu][1]
  • São-Paulo: /o.poɾˈtũ.nu/[1]
  • Rio-de-Janeiro: /o.poʁˈtũ.nu/, [o.poχˈtũ.nu][1]
  • Caipira: /o.poɻˈtũ.nu/[1]

Forms

oportuno (feminine oportuna, masculine plural oportunos, feminine plural oportunas)[1] The older spelling was opportuno, that of the first record, of Bluteau and of Morais;[2][3][4][1] Wiktionary lists it as obsolete.[2][3][4][1]

Etymology

It is borrowed from Latin opportūnus (“convenient, suitable”), first recorded before 1587 in the old spelling with double p.[2][5][1] Nascentes calls it a learned word.[6]

The Latin adjective is probably formed from ob- (“towards”) and portus (“harbour”), and was first a sailors' word for a wind or current that carries a ship towards the harbour.[7][8][9] Houaiss instead links it with Portūnus, the god of harbours.[2] The OLD compares importūnus.[7]

The same Latin word is Spanish oportuno, Galician oportuno and Italian opportuno, and French opportun was taken from it in 1355.[10][11][1][12]

Earliest recorded meaning

Houaiss's first record, from before 1587, has the spelling opportuno;[2][5] Cunha dates the feminine opportuna to the 16th century.[2][5] The sense was already the general one, “coming at the right time, fitting”, which the Latin word had in classical prose.[2][7]

Semantic evolution

Bluteau (1712–1728) defines opportuno as suitable, favourable, fitted to the time, and quotes tempo opportuno.[3] Morais (1789) gives “coming or done at the right time, when it is fitting”, with examples of help, rain, and a time and place fit for dressing wounds.[4] The modern dictionaries keep these senses and add that of a person who says or does the right thing at the right moment.[13][2]

From the adjective come the negative inoportuno, recorded in 1873 as inopportuno, and in the 19th century oportunismo and oportunista.[5]

Timeline

  • before 1587 – first record, spelt opportuno.[2]
  • 16th century – Cunha's date for the word, with the form opportuna.[5]
  • 1712–1728 – Bluteau defines opportuno.[3]
  • 1789 – Morais heads the word opportuno.[4]
  • 1873 – Cunha's first record of inopportuno.[5]

Meanings

Adjective

  1. opportune: coming or done at the right time or to the purpose; appropriate: Escolheu um momento oportuno para falar.[2][14][9][1]
  2. convenient, favourable, fit for a purpose: uma ocasião oportuna para viajar.[2][14][15]
  3. Bringing an advantage; useful.[2]
  4. Of a person: saying or doing what suits the moment.[13]

Word family

  • inoportuno
  • oportunismo
  • oportunista

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 Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. oportuno
  3. ^ a b c d Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. opportuno
  4. ^ a b c d 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. 2, 135
  5. ^ a b c d e f Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. oportuno
  6. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. oportuno
  7. ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. opportūnus
  8. ^ Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 366
  9. ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. oportuno
  10. ^ 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. oportuno
  11. ^ Estraviz, Isaac Alonso, Dicionário Estraviz, https://estraviz.org, p. s.v. oportuno
  12. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. opportun
  13. ^ a b 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. oportuno
  14. ^ a b Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. oportuno
  15. ^ 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. oportuno

Related etymologies

Cite this entry

“Oportuno.” Etymologically, 15 Nov. 2026, etymologically.com/pt/oportuno. Accessed 16 Nov. 2026.

Last edited on . ·