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Iunius

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Etymology and origin of the Latin word Iunius

Iunius1 Roman family name

Confidence
Uncertain
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origins
Proto-Italic *juwen-Latin -ius
Etymology tree of Iunius1
inherited borrowed derived
Latin iuvenis
Italian giovane
Latin Iuno
Latin Iunius
From the same root · Iunius1
Latin iuvenalis ← iuvenis
Latin iuvenilis ← iuvenis
Latin iuventas ← iuvenis
Latin iuventus ← iuvenis

Pronunciation

  • Classical: [ˈjuː.ni.ʊs][1]
  • Ecclesiastical: [ˈjuː.ni.us][1]

Forms

Iūnius (feminine Iūnia, neuter Iūnium); first/second-declension adjective[1]

Etymology

The family name is from Latin Iūnō + -ius according to Wiktionary,[1] and Köbler also refers it to Iūnō.[2] De Vaan reports that Fortson connects the family name with a stem ⟨iou-⟩ instead.[3]

Earliest recorded meaning

Cicero speaks of the lex Iunia, a law named after a member of the gens.[4][5]

Semantic evolution

It is the name of the Junian gens, and as a noun of its members, among them Lucius Junius Brutus, the traditional founder of the Republic, and the two Bruti, Marcus and Decimus.[4][6][5] As an adjective it describes what belongs to or is named after the gens or one of its members, especially laws such as the lex Iunia et Licinia.[4][5]

Timeline

  • 81–43 BC – Cicero mentions the lex Iunia et Licinia.[4][2]
  • 59 BC–17 AD – Livy names Lucius Junius Brutus and the Junian house.[4]
  • 98–115 AD – Tacitus speaks of the familia Iunia.[5]

Meanings

Adjective

  1. The name of a Roman gens; as a noun, a member of it.[4][5]
  2. Of or named after the Junian gens or one of its members, especially of laws.[4][5]

Iunius2 June

Confidence
Probable
Formation
Derivation
First attested
204–169 BC, Ennius
Ultimate origin
Latin Iūnō
Etymology tree of Iunius2
inherited borrowed derived
Latin iuvenis
Italian giovane
Latin Iuno
Latin Iunius
From the same root · Iunius2
Latin iuvenalis ← iuvenis
Latin iuvenilis ← iuvenis
Latin iuventas ← iuvenis
Latin iuventus ← iuvenis

Pronunciation

  • Classical: [ˈjuː.ni.ʊs][1]
  • Ecclesiastical: [ˈjuː.ni.us][1]

Forms

Iūnius (feminine Iūnia, neuter Iūnium); first/second-declension adjective[1]

Etymology

The month name is from Latin Iūnō + -ius.[4][1] De Vaan reports Rix's proposal that it is derived from a feminine stem ⟨iūnī-⟩ “young”,[3] and Etymonline takes it as probably a contraction of Iūnōnius (“sacred to Juno”).[7] Bede reports that Romulus made May the third month and June the fourth in honour of the elders and the iūniōrēs, the younger men, into whom he divided the people.[8]

Earliest recorded meaning

Ennius dates an eclipse to the Nones of June: nonis Iunis soli luna obstitit (“on the Nones of June the moon blocked the sun”).[9][4]

Semantic evolution

In mensis Iunius, or as a noun alone, it is the month of June; as an adjective it also means “of June”, as in Kalendae Iuniae and nonae Iuniae.[4][6] Medieval Latin kept both uses in dating,[8][10] and English took the name as June about 1300.[7]

Timeline

  • 204–169 BC – Ennius dates an eclipse to the nonae Iuniae.[4][9]
  • 81–43 BC – Cicero uses Iunius alone for the month.[5][9]
  • 1st third of the 8th century – Bede explains the name from the iuniores.[8][2]
  • c. 1300 – English has the month name as Iun, June.[7]

Meanings

Adjective

  1. mēnsis Iūnius, or Iūnius alone: the month of June.[4][5]
  2. Of the month of June.[4][6]

Word family

  • Iūnīlicia

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  3. ^ 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
  4. ^ a b c d e f g h i j k l m Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  5. ^ a b c d e f g h Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b c Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  8. ^ a b c Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  9. ^ a b c Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  10. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Borrowed into

Cite this entry

“Iunius.” Etymologically, 24 Oct. 2026, etymologically.com/la/Iunius. Accessed 24 Oct. 2026.

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