Etymologically

Etymology and origin of the Portuguese word mau

Confidence
Established
Formation
Inherited
First attested
1200s More words from the 13th century
Inherited from
Latin malus
Ultimate origin
Latin malus
Etymology tree
inherited borrowed derived
Ancient Greek μῆλον (mêlon)
Latin mālum
Latin mālus
Catalan mal
French mal
Italian malo
Portuguese mau
Spanish malo
Latin mēlum
Romanian măr
The word's journey
From the same root
Ancient Greek μηλοπέπων (mēlopépōn) ← μῆλον
English marmalade ← μῆλον
Latin cotōneum ← mālum
Latin male ← mālus
Latin malitia ← mālus
English malformation ← mal
French malaise ← mal
French malfaire ← mal
French malgré ← mal
French malheur ← mal
Italian malgrado ← malo

Pronunciation

  • Brazil: /ˈmaw/, [ˈmaʊ̯][1]
  • Portugal: /ˈmaw/[1]

Forms

mau (feminine má, masculine plural maus, feminine plural más, comparable, comparative pior, superlative o pior or péssimo)[1] Old Galician-Portuguese wrote mao, feminine maa, also maao.[2] Houaiss records maas, mááos and maos in the 13th century and mãa in the 14th.[3] The dictionaries spell the word mao from Cardoso to Bluteau, and Vieira still heads it mao, ou mau.[4][5][6]

Etymology

It is inherited from Latin malus (“bad”), written Old Galician-Portuguese mao in the oldest texts.[3][1][7][2] The Latin -l- between vowels is lost in the Galician-Portuguese form, which has the same shape in Galician, beside the Spanish form with -l-.[8]

The same Latin word is Galician mao, Spanish malo, Catalan mal, French mal and Italian malo.[9][1]

The Latin word goes back to *malo-;[10] Oscan had a word of the same meaning.[10] A link with *mol-o- (“bad”) and with μέλεος (méleos, “idle; unhappy”) and mẽlas (“lie”) has been proposed, but de Vaan considers it uncertain, since these are isolated words in different branches.[10][1]

Earliest recorded meaning

Houaiss dates the word to the 13th century.[3] The Cantigas de Santa Maria already use it of people and of things: mui maa noite “a very bad night”, maos sabores, and lugar mao.[2]

Semantic evolution

Medieval texts have the word for what is evil and cruel and for what is hard: mao de contar in the Crónica Troiana means “hard to tell”, and the cantigas d'amor have seer mau de “to be difficult”.[2] The phrases en mao ponto and en mao dia expressed bad luck, and notarial deeds of 1390 promise to keep a contract sem mao engano “without deceit”.[2]

Bluteau's examples speak of a wicked man and of evil ways.[5] Modern dictionaries add a person who does a job badly, poor quality in things, and a sense “naughty” said of children.[3][11] The word is also a noun, “a bad person”, and an interjection of disapproval.[1][12] It passed into Kabuverdianu and Guinea-Bissau Creole as mau.[1]

Timeline

  • 13th century – first records, spelt mao, maas and maos.[3][2]
  • 1390 – sem mao engano in notarial deeds of Noia.[2]
  • 1513 – the spelling mau in the Livro dos Mártires.[13]
  • 1569 – Cardoso's dictionary heads the word mao.[4]
  • 1712–1728 – Bluteau heads it mao.[5]
  • 1871–1874 – Vieira gives both spellings, mao, ou mau.[6]

Meanings

Adjective

  1. bad, of poor quality; faulty, badly made: um mau vinho.[3][11][12][1]
  2. evil, wicked; given to doing harm: um homem mau.[3][11][1]
  3. Unkind, bad-tempered: mau feitio.[3]
  4. harmful; that does harm to others or oneself: um mau conselho.[3][11][1]
  5. Not good at what one does: um mau aluno.[3][12]
  6. Hard to overcome or to bear: um caminho mau.[3][14]
  7. Unfortunate, ominous: más notícias.[3][11]
  8. (of children) naughty.[11]

Noun

  1. A bad person;[3][12][1] o mau: the bad thing.[3][12][1]

Interjection

  1. An exclamation of disapproval or disappointment: Mau![12][14]

Word family

  • má-criação
  • má-formação
  • mau-olhado
  • maus-tratos
  • mauzinho
  • mal
  • mal-
  • maldade
  • maldição
  • maltratar
  • Latin malus
  • Galician mao
  • Spanish malo

References

  1. ^ a b c d e f g h i j k l m Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ 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. mao
  3. ^ 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. mau
  4. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. mao
  5. ^ 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. mao
  6. ^ 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. 4, 113
  7. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. mau
  8. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. s.v. malus
  9. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 5273
  10. ^ a b c 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. malus
  11. ^ a b c d e f Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. mau
  12. ^ 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. mau
  13. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. mau
  14. ^ a b Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. mau

Related etymologies

Cite this entry

“Mau.” Etymologically, 15 Nov. 2026, etymologically.com/pt/mau. Accessed 16 Nov. 2026.

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