Etymologically

Etymology and origin of the Portuguese word joio

Confidence
Established
Formation
Inherited
First attested
1521–1558 Sá de Miranda More words from the 16th century
Inherited from
Latin lolium
Ultimate origin
Latin lolium
Etymology tree
inherited borrowed derived
Latin lolium
Italian loglio
Portuguese joio
Spanish joyo

Pronunciation

  • Brazil: /ˈʒoj.u/, [ˈʒoɪ̯.u][1]
  • Portugal: /ˈʒoj.u/[1]

Forms

joio m (uncountable)[1] Morais's 1858 edition spells it jòio and joyo.[2] Vieira (1871–1874) heads it Joyo.[3]

Etymology

It is inherited from Latin lolium (“darnel”), through a Vulgar Latin form with dissimilation of the first /l/.[2][4][1] The intermediate form is given differently: Wiktionary has Vulgar Latin *iolium, Cunha an Iberian Vulgar Latin *liolium, and the first edition of Aurélio a chain *liolium < *jolium.[1][5][6] A Latin glossary of the 9th century already has the form with initial /j/, and Corominas notes that the Portuguese and Spanish words point to a base *jojum, while the other Romance forms continue the glossary's form.[7]

The same word is Galician xoio, Spanish joyo, Catalan jull, Occitan juelh and Italian loglio, with the Tuscan form gioglio.[8][7][1] De Vaan finds no etymology for the Latin word.[9] The OLD compares Sanskrit लोलति (lṓlati, “moves to and fro”), because the plant causes giddiness, and Wiktionary suggests an imitative root Proto-Indo-European *leh₂-, with a question mark.[10][1]

Earliest recorded meaning

The first record Houaiss and Lorenzo give is in the works of Sá de Miranda (1521–1558), in the image of the sower who reaps weeds: semeais e esperais trigo, / colheis joio e ervilhaca “you sow and hope for wheat, you reap darnel and vetch”.[2][11] Cunha dates the word to the 16th century.[5]

Semantic evolution

From the start the word named the grass that grows among wheat, and with it anything bad growing among the good: Cunha and Houaiss record the figurative sense beside the botanical one.[5][2] Botanists use it for the genus Lolium as a whole and in particular for Lolium temulentum, whose grain, infected by a fungus, is poisonous.[2][12] Houaiss notes it was once used with barley to make beer.[2] The phrase separar o joio do trigo “to separate the darnel from the wheat” is current in both Portugal and Brazil.[13][14] In Trás-os-Montes joio is also a name of the elm.[15][16]

Timeline

  • 1521–1558 – Sá de Miranda: colheis joio e ervilhaca.[2][11]
  • 1858 – Morais's sixth edition spells it jòio and joyo.[2]
  • 1871–1874 – Vieira heads the word Joyo and refers joio to it.[3]
  • 1883 – a letter from Bahia uses the word.[17]

Meanings

Noun

  1. darnel, an annual grass (Lolium temulentum) that grows as a weed in wheat fields and has a toxic grain; also any plant of the genus Lolium.[2][18][1]
  2. The seed of these plants.[2][18]
  3. (figurative) Something or someone harmful that appears among good things and spoils them.[2][13]
  • joeira
  • joeirar
  • lólio
  • cizânia
  • Latin lolium
  • Spanish joyo

Usage notes

The fixed phrase separar o joio do trigo means to tell the bad from the good.[13][19] Joio-venenoso is a different plant, of the pink family (Agrostemma githago).[19]

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. joio
  3. ^ 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, 1204
  4. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. joio
  5. ^ a b c Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. joio
  6. ^ Ferreira, Aurélio Buarque de Holanda (1975), Novo dicionário da língua portuguesa, 1st ed., Rio de Janeiro: Nova Fronteira, p. 827
  7. ^ a b Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 3, 529
  8. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 5112
  9. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  10. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. lolium
  11. ^ a b 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. joio
  12. ^ Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 5487
  13. ^ a b c Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. joio
  14. ^ Schlee, Aldyr Garcia (2019), Dicionário da Cultura Pampeana Sul-Rio-Grandense, 2 vols., Pelotas: Fructos do Paiz, p. s.v. joio
  15. ^ Wikcionário (Portuguese Wiktionary), pt.wiktionary.org, p. s.v. joio
  16. ^ Instituto da Lingua Galega, Tesouro do léxico patrimonial galego e portugués (TLPGP), Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/tesouro, p. s.v. joio
  17. ^ Carneiro, Zenaide de Oliveira Novais; Lacerda, Mariana Fagundes de Oliveira (orgs.), CE-DOHS: Corpus Eletrônico de Documentos Históricos do Sertão, Feira de Santana: UEFS, http://www5.uefs.br/cedohs, p. s.v. joio
  18. ^ 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. joio
  19. ^ a b 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. joio

Related etymologies

Cite this entry

“Joio.” Etymologically, 15 Nov. 2026, etymologically.com/pt/joio. Accessed 16 Nov. 2026.

Last edited on . ·