Etymologically

Etymology and origin of the Portuguese word exército

Confidence
Established
Formation
Borrowing
First attested
1400s More words from the 15th century
Borrowed from
Latin exercitus
Ultimate origin
Latin arceō
Etymology tree
inherited borrowed derived
Latin arceō
Latin exerceō
French exercer
Romanian exersa
Latin exercitus
Italian esercito
Portuguese exército
Spanish ejército
From the same root
Latin coerceō ← arceō
Latin exercitium ← exerceō
Latin exercitō ← exerceō

Pronunciation

  • Brazil: /eˈzɛʁ.si.tu/, [eˈzɛh.si.tu][1]
  • São-Paulo: /eˈzɛɾ.si.tu/[1]
  • Rio-de-Janeiro: /eˈzɛʁ.si.tu/, [eˈzɛχ.si.tu][1]
  • Caipira: /eˈzɛɻ.si.tu/[1]

Forms

exército m (plural exércitos)[1] Before the spelling reforms the word was written without the accent, exercito, as in Bluteau's dictionary.[2] A private letter of 1580 spells it exersito.[3]

Etymology

It is borrowed from Latin exercitus (“army”), a learned word rather than one handed down by speech.[4][5][6][1] Houaiss traces the Latin noun to the stem of the supine of exerceō (“to work at, keep busy”).[4] The OLD analyses it as the verb with the action-noun suffix -tus, and gives its first sense as “physical exercise, exertion” beside “a military force”.[7][1]

The same Latin word was borrowed as Spanish ejército, Catalan exèrcit and Italian esercito.[8][1]

The verb is formed from ex- (“out of”) and arceō (“to contain, keep out”).[7][1] De Vaan reconstructs a Proto-Italic verb meaning “to contain, keep out” and a Proto-Indo-European root meaning “to hold”, and compares ἀρκέω (arkéō, “to ward off, defend”).[9]

Earliest recorded meaning

Houaiss dates the word to the 15th century from the slips of Cunha's index of medieval Portuguese.[4] Cunha himself gives 1572 as his first date, in the sense of a body of troops.[5]

Semantic evolution

Bluteau defines the word as a large body of soldiers under the command of a general, and Feijó in 1734 as a great number of soldiers in the field with their general.[2][10] Morais in 1813 records the figurative sense “great number”, besides the use for an army's camp.[11] Figueiredo in 1899 has both the regular troops of a nation and any body of troops arrayed for war.[12]

In the 20th century the word came to name the permanent land force of a state as an institution, written with a capital letter beside the navy and the air force.[4][13][14] Aurélio describes this Brazilian institution under the authority of the president.[4][13][14] The figurative “multitude” is still current.[4][15]

Timeline

  • 1400s – first record, in the slips of Cunha's medieval index.[4]
  • 1572 – Cunha's first date for the word.[5]
  • 1580 – exersito in a private letter.[3]
  • 1712–1728 – Bluteau defines exercito as a large body of soldiers under a general.[2]
  • 1813 – Morais records the figurative sense “great number”.[11]
  • 1899 – Figueiredo derives the word from Latin exercitus, from exercere.[12]

Meanings

Noun

  1. The land armed forces of a nation, as an institution; written with a capital letter: o Exército português.[4][16][17]
  2. (military) A large unit of land forces made up of several divisions.[4][17]
  3. The troops that take part in a battle or campaign; an army in the field.[4][13][15]
  4. (figurative) A great number of people, a multitude: um exército de voluntários.[4][15][18]

Usage notes

Houaiss and Michaelis record the set names Exército de Salvação “Salvation Army”, a religious and charitable organisation with a military hierarchy, and exército de ocupação “army of occupation”.[4][18]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. exército
  3. ^ a b CLUL (ed.) (2014), P.S. Post Scriptum: Arquivo Digital de Escrita Quotidiana em Portugal e Espanha na Época Moderna, Lisboa: Centro de Linguística da Universidade de Lisboa, http://ps.clul.ul.pt, p. s.v. exército
  4. ^ 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. exército
  5. ^ a b c Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. exército
  6. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. exército
  7. ^ a b Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  8. ^ 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. ejército
  9. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ 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. exército
  11. ^ a b Silva, António de Morais (1813), Diccionario da lingua portugueza, 2nd ed., 2 vols., Lisboa: Typographia Lacerdina, p. 1, 797
  12. ^ a b Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. s.v. exército
  13. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. exército
  14. ^ a b Schlee, Aldyr Garcia (2019), Dicionário da Cultura Pampeana Sul-Rio-Grandense, 2 vols., Pelotas: Fructos do Paiz, p. s.v. exército
  15. ^ a b c Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. exército
  16. ^ 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. exército
  17. ^ a b Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 4079
  18. ^ 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. exército

Related etymologies

Cite this entry

“Exército.” Etymologically, 15 Nov. 2026, etymologically.com/pt/ex%C3%A9rcito. Accessed 16 Nov. 2026.

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