Etymologically

Etymology and origin of the Portuguese word efeito

Confidence
Established
Formation
Inherited
First attested
1200s spelt effecto More words from the 13th century
Inherited from
Latin effectus
Ultimate origin
Latin faciō
Etymology tree
inherited borrowed derived
Latin faciō
Aromanian fac
Catalan fer
French faire
Italian fare
Portuguese fazer
Romanian face
Spanish hacer
Latin efficiō
Latin effectus
Portuguese efeito
English effect
French effet
Romanian efect
Italian effetto
Spanish efecto
From the same root
English surfeit ← faciō
French affaire ← faciō
French défaire ← faciō
Latin afficiō ← faciō
Latin assuefacio ← faciō
Latin calefaciō ← faciō
Latin clārificus ← faciō
Latin commonefaciō ← faciō
Latin cōnficiō ← faciō
Latin dēficiō ← faciō
Latin disfaciō ← faciō
Latin facessō ← faciō
Latin facibilis ← faciō
Latin facienda ← faciō
Latin faciēs ← faciō
Latin facilis ← faciō
Latin facinus ← faciō
Latin factiō ← faciō
Latin factitō ← faciō
Latin factor ← faciō
Latin factūra ← faciō
Latin factus ← faciō
Latin fortificō ← faciō
Latin frīgefactō ← faciō
Latin īnficiō ← faciō
Latin interficiō ← faciō
Latin iūstificō ← faciō
Latin labefaciō ← faciō
Latin liquefaciō ← faciō
Latin mollificō ← faciō
See all derived words →

Pronunciation

  • Brazil: /eˈfej.tu/, [eˈfeɪ̯.tu][1]
  • Portugal: /iˈfɐj.tu/[1]
  • Northern, Portugal: /iˈfej.tu/[1]
  • Central, Portugal: /iˈfej.tu/[1]

Forms

efeito m (plural efeitos)[1]

Etymology

It is inherited from Latin effectus (“performance; result”), from efficiō (“to bring about, accomplish”).[2][3][1][4] Nascentes counts it a semi-learned word.[5] The oldest records keep the Latin spelling Old Galician-Portuguese effecto; the spellings ⟨effeito⟩ and ⟨efeito⟩, with ⟨ei⟩ for the Latin ⟨ec⟩, come later: Houaiss dates ⟨efeito⟩ to the 15th century, and Cunha ⟨effeito⟩ to 1572.[2][3]

The Latin word is also Italian effetto and French effet, a borrowing first written aifait in 1272.[1][6] The Latin verb is formed of ex- and faciō (“to make, do”).[6]

Earliest recorded meaning

Houaiss dates the first record, spelt effecto, to the 13th century, Cunha to the 14th.[2][3] Lorenzo's chronology quotes the Portuguese chronicle of 1344: e os effectos que fazem as strellas “and the effects that the stars produce”, already the sense “result of a cause”.[7]

Semantic evolution

Cardoso (1569) renders it with Latin effectus and res, “the thing itself”.[8] Bluteau defines it as what a cause has produced, and has the phrase pôr em effeito.[9] Morais (1789) adds “execution”, “aim, end” and pôr em effeito “to carry out, fulfil”.[10] Modern senses include “impression, sensation”, a negotiable security in commerce, the spin given to a ball, the special effects of cinema and sound recording, and named phenomena of physics such as the efeito Doppler.[2][11][1]

Timeline

  • 13th century – first record, spelt effecto.[2]
  • 1344 – effectos in the Portuguese chronicle of 1344.[7]
  • 1435–1439 – the spelling effecto is still in use.[7]
  • 15th century – first record of the spelling efeito.[2]
  • 1569 – Cardoso's dictionary heads the word Effeito.[8]
  • 1572 – effeito.[3]
  • 1789 – Morais records pôr em effeito “to carry out”.[10]
  • 1871–1874 – Vieira heads the word effeito and derives it from Latin effectus.[12]
  • 1899 – Figueiredo enters efeito as a variant of effeito.[13]

Meanings

Noun

  1. An effect; the result or consequence of a cause.[2][1][14]
  2. Aim, purpose: para tal efeito.[2][14]
  3. Realization, execution: levar a efeito “to carry out”.[2][14]
  4. Power, efficacy: um remédio sem efeito.[2]
  5. An impression or sensation produced in someone.[2][11]
  6. (commerce) A negotiable security or bill.[2][11]
  7. (art, cinema, music) A device used to produce an impression: efeitos especiais.[2][1]
  8. (sports) spin given to a ball.[2][11]
  9. (physics) A phenomenon produced by a definite cause: efeito Doppler.[2][1]

Usage notes

Com efeito means “indeed, in fact”.[11]

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 Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. efeito
  3. ^ a b c d Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. efeito
  4. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. effectus
  5. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. efeito
  6. ^ a b Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. effet
  7. ^ a b c 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. effecto
  8. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. effeito
  9. ^ Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. effeito
  10. ^ 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, 462
  11. ^ a b c d e Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. efeito
  12. ^ Vieira, Frei Domingos (1871–1874), Grande Diccionario Portuguez ou Thesouro da lingua portugueza, 5 vols., Porto: Ernesto Chardron e Bartholomeu H. de Moraes, p. 3, 13
  13. ^ Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. 472
  14. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. efeito

Related etymologies

Cite this entry

“Efeito.” Etymologically, 15 Nov. 2026, etymologically.com/pt/efeito. Accessed 16 Nov. 2026.

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