Etymology and origin of the Portuguese word freio
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1200s Cantigas de Santa Maria, spelt frẽos More words from the 13th century
- Inherited from
- Latin frenum
- Ultimate origin
- Latin frēnum
Etymology tree
From the same root
Pronunciation
Forms
freio m (plural freios)[1] Old Galician-Portuguese wrote frẽo and freo; the spelling freio appears in the 15th century.[2][3] Vieira (1871–1874) still heads the word frêo and refers freio to it.[4]
Etymology
It is inherited from Latin frēnum (“bridle, bit”), written Old Galician-Portuguese frẽo in the oldest texts, with a nasal vowel that was soon lost.[2][3][1][5] The Latin /n/ between vowels was lost, a change that sets Galician-Portuguese apart from the other Romance languages, which keep it; the nasal vowel of the old form is its trace.[6][7]
The same Latin word is Galician freo, Spanish freno, Catalan fre, Occitan fren, French frein, Italian freno and Romanian frâu.[8][9][1] It was also borrowed into Welsh as ffrwyn.[8]
The Latin noun is from *frēnom.[1] De Vaan and Wiktionary derive it from *dʰr-eh₁-nom “holding”, from the root *dʰer- (“to hold”), and de Vaan finds Walde and Hofmann's link with frētus (“relying on”) the most straightforward.[10][1] He reports that Ernout and Meillet instead explained it from frendō (“to gnash”), as the thing the horse chews on, which he thinks possible but less likely.[10]
Earliest recorded meaning
The Cantigas de Santa Maria list panos e selas e frẽos “cloths and saddles and bits”, and a cantiga of Fernan Soarez de Quinhones says of a horse that it has the bit but no spurs (e tem o freo e esporas non).[7][11] The word meant the bit and bridle of a horse or mule.[7]
Semantic evolution
Medieval texts use the word for the horse's bit: the Crónica Geral of 1344 has a rider sẽ sella e sem freo “without saddle and without bit”, a record of 1364 a freo muar “mule's bit”, and the Crónica Troiana praises bits so noble and rich.[7] The Latin word was already used figuratively for anything that holds back, and the Portuguese word has the same sense of a check or restraint.[12][2]
With the machines of the 19th century the word passed to the device that regulates or stops a movement: Silva Bastos and Figueiredo define it as the apparatus that controls steam engines and as the railway wagon that carries it.[13][14] Today the brake of a car is the main sense in Brazil;[2] Houaiss gives travão and breque as synonyms.[2] In anatomy freio is the fold of tissue that holds an organ, such as the frenulum under the tongue.[2][15]
Timeline
- 13th century – frẽos in the Cantigas de Santa Maria.[7][3]
- 1344 – sem freo in the Crónica Geral.[7]
- 1364 – hum freo muar “a mule's bit” in a document.[7]
- 15th century – first record of the spelling freio.[2]
- 1537 – freo in a private letter.[16]
- 1871–1874 – Vieira heads the word frêo.[4]
- 1899 – Figueiredo adds the regulator of machines and the brake wagon of the railways.[14]
Meanings
Noun
- The bit of a bridle: the metal piece that passes through the mouth of a horse or mule, joined to the reins, by which it is guided.[2][17][18][1]
- A brake: a device that slows or stops a machine or vehicle; travão, breque.[2][17][1]
- (railways) A wagon fitted with a brake.[2][19]
- Each of the jaws of a locksmith's vice.[2][20]
- (figurative) Anything that checks, restrains or holds back: pôr um freio aos gastos.[2][18]
- (anatomy) A fold of mucous membrane that limits the movement of an organ; a frenulum, especially that of the tongue.[2][15][1]
Word family
- enfrear
- enfreado
- desenfreado
- guarda-freio
Related words
Usage notes
Houaiss records the phrases tomar o freio nos dentes, of a horse that will not be guided and of a person carried away by enthusiasm or recklessness, and não ter freio na língua, to say whatever one likes.[2]
References
- ^ a b c d e f g h i j k l Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k l m n Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. freio
- ^ a b c Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. freio
- ^ 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, 769
- ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. freio
- ^ Ciberdúvidas da Língua Portuguesa, ISCTE – Instituto Universitário de Lisboa, https://ciberduvidas.iscte-iul.pt
- ^ a b c d e f g 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. freo
- ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 3496
- ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. frenum
- ^ 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
- ^ 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. freo
- ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. frein
- ^ Silva Bastos, José Timóteo da (1912), Diccionario etymologico, prosodico e orthographico da lingua portugueza, Lisboa: Parceria António Maria Pereira, p. s.v. freio
- ^ a b Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. s.v. freio
- ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. freio
- ^ 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. freio
- ^ a b Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. freio
- ^ 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. freio
- ^ 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. freio
- ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 4471
Related etymologies
Cite this entry
“Freio.” Etymologically, 15 Nov. 2026, etymologically.com/pt/freio. Accessed 16 Nov. 2026.
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