Etymology and origin of the Portuguese word mentir
- Confidence
- Established
- Formation
- Inherited
- First attested
- 1200s More words from the 13th century
- Inherited from
- Latin mentior
- Ultimate origin
- Latin mens
Etymology tree
Pronunciation
Forms
mentir (first-person singular present minto, third-person singular present mente, first-person singular preterite menti, past participle mentido)[1] Houaiss records metir and mintyr in the 14th century.[2] The cantigas have the first person menço and the subjunctive mença, beside the later minto.[3] Feijó (1734) prescribes mentir, not mintir.[4]
Etymology
It is inherited from Latin mentior (“to lie”), through the active infinitive that Late Latin used in place of the deponent, written Old Galician-Portuguese mentir in the oldest texts.[2][5][6][1] Forms with /i/ in the first syllable, such as the 14th-century mintyr, show the /e/ assimilated to the stressed /i/, as Nunes explained.[7][2]
The same Latin word is Galician mentir, Spanish mentir, Catalan mentir, French mentir and Italian mentire.[8][1]
The Latin verb is derived from mēns (“mind”);[9][1][5] Wiktionary explains the sense “to lie” from “to be inventive, to imagine”, and traces the noun to Proto-Indo-European *méntis.[9][1][5]
Earliest recorded meaning
The verb is recorded from the 13th century.[2][5] In the cantigas d'amigo it is intransitive, and por non mentir and sen todo mentir mean “to tell the truth, frankly”;[3][10] Universo Cantigas also gives a transitive sense “to deceive, break an agreement”.[3][10]
Semantic evolution
Bluteau (1712–1728) explains it as saying the opposite of what one has in mind.[11] Morais (1789) adds the senses “to fail, disappoint”, said of a hope, and “to feign”.[12] Modern dictionaries keep “to fail, not to thrive” for plants and “to degenerate” in phrases such as bom sangue não mente; the DLP adds technical senses in carpentry and of a boat that does not answer the helm.[2][13][14] From São Paulo to Rio Grande do Sul queimar campo is a synonym.[15]
Timeline
- 13th century – first record.[2][5]
- 14th century – the spellings metir and mintyr.[2]
- 1611 – Barbosa renders it by Latin mentior.[16]
- 1734 – Feijó rejects the spelling mintir.[4]
Meanings
Verb
- To lie, to say what one knows to be false: Não me mintas![2][17][1]
- To deceive, to give a false impression: As aparências mentem.[2][15][1]
- To hide the truth about: mentir o salário.[2]
- To fail to keep a duty or promise: mentir à palavra.[2][13]
- (figurative) To fail, not to thrive; to lose one's true quality.[2][17][1]
Word family
- mentira
- mentiroso
- desmentir
- desmentido
Related words
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 Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. mentir
- ^ 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. mentir
- ^ a b 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. mentir
- ^ a b c d e Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. mentir
- ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. mentir
- ^ Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 1, 327
- ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 5510
- ^ 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, p. s.v. mēns
- ^ a b 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. mentir
- ^ Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. mentir
- ^ 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. 2, 74
- ^ a b 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. mentir
- ^ 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. mentir
- ^ a b Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. mentir
- ^ Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. mentir
- ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. mentir
Related etymologies
Cite this entry
“Mentir.” Etymologically, 15 Nov. 2026, etymologically.com/pt/mentir. Accessed 16 Nov. 2026.
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