Etymologically

Etymology and origin of the Portuguese word formigueiro

Confidence
Established
Formation
Derivation
First attested
1529 More words from the 16th century
Ultimate origin
Latin formīca
Etymology tree
inherited borrowed derived
Latin formīca
Italian formica
Portuguese formiga
Portuguese formigueiro
Romanian furnică
Spanish hormiga
From the same root
French formique ← formīca
Latin formīcō ← formīca
Italian formicaio ← formica
Romanian furnicar ← furnică
Spanish hormiguero ← hormiga

Pronunciation

  • Brazil: /foʁ.miˈɡe(j).ɾu/, [foɦ.miˈɡe(ɪ̯).ɾu], /fuʁ.miˈɡe(j).ɾu/[1]
  • São-Paulo: /foɾ.miˈɡe(j).ɾu/, [foɾ.miˈɡe(ɪ̯).ɾu], /fuɾ.miˈɡe(j).ɾu/[1]
  • Rio-de-Janeiro: /foʁ.miˈɡe(j).ɾu/, [foʁ.miˈɡe(ɪ̯).ɾu], /fuʁ.miˈɡe(j).ɾu/[1]
  • Caipira: /foɻ.miˈɡe(j).ɾu/, [foɻ.miˈɡe(ɪ̯).ɾu], /fuɻ.miˈɡe(j).ɾu/[1]

Forms

formigueiro m (plural formigueiros)[1] A letter of 1821 spells it furmigueiro.[2]

Etymology

It is formed from Portuguese formiga (“ant”) + -eiro.[3][4][5][1] Wiktionary notes that it may correspond to a Vulgar Latin *formīcārium.[1] The same derivative is found across Romance: Spanish hormiguero, Catalan formiguer, Italian formicaio and Romanian furnicar.[6][1]

The base noun comes from Latin formīca (“ant”).[6][7] De Vaan reconstructs an earlier *mormīkā-, and Wiktionary explains the initial /f/ as a dissimilation of /m…m/ and links the word with Proto-Indo-European *morwi- (“ant”), a term whose forms vary widely across the Indo-European languages.[7][1]

Earliest recorded meaning

Houaiss dates the word to 1529, in the sense “home of ants”.[3] Cardoso's dictionary of 1569 renders it with Latin formicarium.[8]

Semantic evolution

Bluteau (1712–1728) already has the figurative uses: a swarm of worms in a neglected wound, and a crowd of people, parecia hum formigueiro “it looked like an anthill”.[9] Morais (1813) records an adjective, ladrão formigueiro “a thief who steals small things”, which the DLP marks as popular and dated.[10][4] Vieira (1871–1874) adds the sense of an ardent restlessness, and Figueiredo (1899) a prickling of the skin as if ants were crawling over it and a disease of horses' hooves.[11][12]

In the Azores formigueiro is the south-east wind, which blows from the Formigas rocks north of the island of Santa Maria.[3][13][4] In Brazil the word also names a tree of Mato Grosso, Triplaris, otherwise called formigueira, and in the north-east a pins-and-needles feeling in the legs.[5][14]

Timeline

  • 1529 – first record.[3]
  • 1569 – Cardoso lists it, rendered formicarium.[8]
  • 1712–1728 – Bluteau records the figurative “crowd of people”.[9]
  • 1813 – Morais records ladrão formigueiro, a petty thief.[10]
  • 1821 – a private letter spells it furmigueiro.[2]
  • 1871–1874 – Vieira derives it from formiga with the suffix -eiro.[11]

Meanings

Noun

  1. An anthill or ant nest, in the ground or in an old stump.[3][1]
  2. The ants living in one nest; a colony; a great number of ants.[3][15]
  3. (figurative) A great crowd of people, or a place full of people in movement: Na hora de ponta a estação é um formigueiro.[3][4]
  4. An itching or prickling of the skin, as if ants were crawling over it.[3][16]
  5. (figurative) restlessness, impatience.[3][5]
  6. (Azores) The south-east wind.[3][4]
  7. (veterinary) A disease of horses' hooves.[3][17]

Adjective

  1. (dated, popular) Of a thief: stealing things of little value, in ladrão formigueiro.[10][4][1]

Word family

  • formigueira

Usage notes

In informal Brazilian Portuguese sentar num formigueiro “to sit on an anthill” is said of someone restless and agitated.[3]

References

  1. ^ a b c d e f g h i j k Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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. formigueiro
  3. ^ 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. formigueiro
  4. ^ a b c d e f 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. formigueiro
  5. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. formigueiro
  6. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 3445
  7. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  8. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. formigueiro
  9. ^ a b Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. formigueiro
  10. ^ a b c Silva, António de Morais (1813), Diccionario da lingua portugueza, 2nd ed., 2 vols., Lisboa: Typographia Lacerdina, p. 2, 49
  11. ^ a b 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, 743
  12. ^ Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. 626
  13. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. formigueiro
  14. ^ Navarro, Fred (2004), Dicionário do Nordeste, São Paulo: Estação Liberdade, p. s.v. formigueiro
  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. formigueiro
  16. ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 4411
  17. ^ Schlee, Aldyr Garcia (2019), Dicionário da Cultura Pampeana Sul-Rio-Grandense, 2 vols., Pelotas: Fructos do Paiz, p. 1

Related etymologies

Cite this entry

“Formigueiro.” Etymologically, 15 Nov. 2026, etymologically.com/pt/formigueiro. Accessed 16 Nov. 2026.

Last edited on . ·