Etymologically

Etymology and origin of the Portuguese word gastar

Confidence
Established
Formation
Inherited
First attested
1200s More words from the 13th century
Inherited from
Latin vasto
Ultimate origin
Latin vāstus
Etymology tree
inherited borrowed derived
Latin vāstus
French vaste
Latin vāstō
French gâter
Italian guastare
Portuguese gastar
Spanish gastar
From the same root
Latin vāstitās ← vāstus
Latin vāstum ← vāstus
French gâteux ← vāstō
Latin dēvāstō ← vāstō
Latin vastatio ← vāstō

Pronunciation

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

Forms

gastar (first-person singular present gasto, first-person singular preterite gastei, past participle gastado, short past participle gasto)[1] Old Galician-Portuguese also wrote guastar, recorded in the 14th century.[2][3]

Etymology

It is inherited from Latin vāstō (“to lay waste, ravage”), written Old Galician-Portuguese gastar and Old Galician-Portuguese guastar in the oldest texts.[2][3][1] Its initial /g/ is due to a Germanic word: Houaiss and Cunha name the root Proto-Germanic *wōstjan (“to lay waste”), and Wiktionary the descendants of Frankish *wōstī (“waste”).[2][3][1] Corominas explains that the Latin verb was pronounced *wastō in late times under the influence of the West Germanic verb, and Wiktionary that the expected /ɡw/ was reduced to /g/ before an unstressed syllable.[4][1] The learned doublet is vastar.[2][1]

The same blend is Spanish gastar, Catalan gastar, Italian guastare and French gâter.[5][6][1]

The Latin verb is formed on vāstus (“empty, desolate”).[7][1] De Vaan reconstructs *h₁u(e)h₂-sto- for the adjective and compares fás (“empty”) and the Germanic adjective *wōstiz, the source of wuosti.[8]

Earliest recorded meaning

Cunha dates the verb to the 13th century, with guastar in the 14th.[3] In a cantiga d'escarnho by Pero Viviaez it means “to eat, consume”: Pois ben nen mal do jantar non gastou “since he ate neither well nor badly of the dinner”.[9][10] The prose of the 14th century has both the old sense “to lay waste”, in the Crónica Geral (sua terra … quebrantada et guastada “their land broken and laid waste”), and that of spending wealth, in the chronicle of 1344 (gastousse hy o mais do auer “most of the money was spent there”).[9]

Semantic evolution

The Latin sense “to lay waste” survives only in the medieval texts;[9][11] Portuguese, like Spanish, turned the verb to the consumption of goods and money.[9][11] Cardoso (1569) glosses it with consumo “to use up”, and Barbosa (1611) has gastar a idade and gastar o tempo “to spend one's life, one's time”.[12][13] Bluteau (1712–1728) puts first the spending of money, and Morais (1789) adds “to destroy, damage”, “to wear out with use” and “to digest”.[14][15]

Modern senses include wearing a thing down by friction, using up fuel or time and weakening a person's strength; the reflexive gastar-se is “to wear out” and, in Portugal, “to sell, find buyers”.[2][16][17] Priberam also records a Portuguese student use, “to fail someone in an exam”.[17]

Timeline

  • 1200s – first record.[3]
  • 1300s – the spelling guastar.[2][3]
  • 1344 – gastousse hy o mais do auer in the chronicle of 1344.[9]
  • c. 1430 – gastar in the Horto do Esposo.[18]
  • 1569 – Cardoso glosses it consumo.[12]
  • 1611 – Barbosa lists gastar o tempo.[13]
  • 1789 – Morais records “to wear out with use” and “to digest”.[15]

Meanings

Verb

  1. To spend money: Gastámos pouco nas férias.[2][19][1]
  2. To spend wastefully; to squander, dissipate.[2][20]
  3. To wear down or out by use or friction: gastar as solas.[2][20][21]
  4. To use up, consume (fuel, energy, time): O carro gasta pouca gasolina.[2][19][1]
  5. To damage, destroy; to weaken, exhaust a person's strength or health.[2][20]
  6. To let time go by; to spend (a day, an hour).[2][13]
  7. (reflexive) To wear out; to run out, be used up.[2][16]
  8. (reflexive, Portugal) To sell, find buyers.[16][17]
  9. To digest.[21][17]

Word family

  • gasto
  • gastador
  • desgastar
  • desgaste
  • agastar
  • malgastar

Usage notes

The past participle has a regular form gastado and a short form gasto;[1][3] gasto is also a noun, “expense”.[1][3] Porto Editora records the saying gastar cera com ruins defuntos “to waste wax on bad corpses”, to make sacrifices for someone who does not deserve them.[16]

References

  1. ^ a b c d e f g h i j k l m n o Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. gastar
  3. ^ a b c d e f g h Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. gastar
  4. ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 3, 121
  5. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 9168
  6. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. vastare
  7. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. uastō
  8. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill, p. s.v. vāstus
  9. ^ 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. gastar
  10. ^ 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. gastar
  11. ^ a b Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. gastar
  12. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. gastar
  13. ^ a b c Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. gastar
  14. ^ Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. gastar
  15. ^ 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, 654
  16. ^ a b c d Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 4626
  17. ^ a b c d Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. gastar
  18. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. gastar
  19. ^ 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. gastar
  20. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. gastar
  21. ^ a b 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. gastar

Related etymologies

Cite this entry

“Gastar.” Etymologically, 15 Nov. 2026, etymologically.com/pt/gastar. Accessed 16 Nov. 2026.

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