Etymologically

Etymology and origin of the Portuguese word guai

Confidence
Disputed
Formation
Borrowing
First attested
1502–1536 spelt guay More words from the 16th century
Borrowed from
Gothic 𐍅𐌰𐌹
Ultimate origin
Gothic 𐍅𐌰𐌹

Pronunciation

  • Brazil: /ˈɡwaj/, [ˈɡwaɪ̯][1]
  • Portugal: /ˈɡwaj/[1]

Etymology

It is borrowed from Gothic 𐍅𐌰𐌹 (wai, “woe!”) in the view of Wiktionary, Nascentes, Aurélio, the DLP and Porto Editora.[1][2][3][4][5] Nascentes's fuller dictionary cites Meyer-Lübke's REW and Said Ali, who rejects a Latin origin, for the Gothic etymology, and holds that a Germanic influence on the initial ⟨gu⟩ cannot be denied.[6] João Ribeiro also pointed to Celtic.[6]

Houaiss instead derives it from Latin vae (“woe!, alas!”), an interjection of suffering, and lists as parallels Latvian vai, Romanian vai, Italian guai and Spanish guay beside the Gothic word.[7] Figueiredo, Aulete and DELPo also compare the Latin word.[8][9][10]

The Gothic interjection continues Proto-Germanic *wai, whence also Old English wā, Old High German wē and Old Norse vei.[11] Wiktionary takes the Germanic and the Latin words from Proto-Indo-European *wai.[1] De Vaan thinks they are probably independent imitations of a cry, though a common inheritance cannot be excluded, and Orel notes similar interjections in many languages, Indo-European and not.[12][13]

Earliest recorded meaning

Houaiss's first record, spelt guay, is from texts of 1502 to about 1536 that he cites as GVic.[7] There it expresses pity, compassion or another moral pain, construed with de: guai de ti “woe to you”.[7]

Semantic evolution

A quotation from an edition of 1619 in Aulete shows the construction with de: guai dos que vivem sem elas “woe to those who live without them”, said of persecutions that try the good.[9] The word was also used as a noun, “a lament”, and Aurélio quotes it in a poem by Martins Fontes, em convulsivo guai “in a convulsive wail”.[7][3] Vieira records beside it the noun guaia or guaya “sobs, weeping, a mournful song”.[14] The dictionaries from Figueiredo on label it archaic, an old equivalent of ai.[8][7][15]

Timeline

  • 1502–c. 1536 – first record, spelt guay.[7]
  • 1619 – guai dos que vivem sem elas in a life of an archbishop by Frei Luís de Sousa.[9]
  • 1871–1874 – Vieira defines guai as an expression of grief and pity.[14]
  • 1899 – Figueiredo marks it as old, the same as ai.[8]

Meanings

Interjection

  1. (archaic) Expresses grief, pity or another moral pain; woe, alas, like ai: Guai de nós, se ninguém nos ouvir![7][3][16]

Noun

  1. (archaic) A lament, a cry of grief.[7][3]

Usage notes

Wikcionário also records guai as São Paulo slang for a troublesome boy.[17]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. guai
  3. ^ a b c d Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. guai
  4. ^ 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. guai
  5. ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 4803
  6. ^ a b Nascentes, Antenor (1955), Dicionário etimológico da língua portuguesa, vol. 1: Nomes comuns, Rio de Janeiro (1st ed. 1932, preface by W. Meyer-Lübke), p. 251
  7. ^ a b c d e f g h Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. guai
  8. ^ a b c Figueiredo, Cândido de (1899), Novo diccionário da língua portuguesa, 1st ed., 2 vols., Lisboa: Tavares Cardoso & Irmão, p. s.v. guai
  9. ^ a b c 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. guai
  10. ^ NEHiLP – Núcleo de Apoio à Pesquisa em Etimologia e História da Língua Portuguesa, Universidade de São Paulo, DELPo: Dicionário Etimológico da Língua Portuguesa (online database), p. s.v. guai
  11. ^ Kroonen, Guus (2013), Etymological Dictionary of Proto-Germanic, Leiden Indo-European Etymological Dictionary Series 11, Leiden / Boston: Brill, p. 566
  12. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  13. ^ Orel, Vladimir (2003), A Handbook of Germanic Etymology, Leiden / Boston: Brill, p. 440
  14. ^ 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, 931
  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. guai
  16. ^ Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. guai
  17. ^ Wikcionário (Portuguese Wiktionary), pt.wiktionary.org, p. s.v. guai

Related etymologies

  • rico · also from Gothic
  • roupa · also from Gothic
Cite this entry

“Guai.” Etymologically, 15 Nov. 2026, etymologically.com/pt/guai. Accessed 16 Nov. 2026.

Last edited on . ·