Etymologically
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regnum

Etymology and origin of the Latin word regnum

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Confidence
Established
Formation
Derivation
First attested
Plautus
Ultimate origin
Latin (rēx)

Pronunciation

  • IPA (Classical): [ˈreːŋ.nũː][1]
  • IPA (Ecclesiastical): [ˈrɛɲ.ɲum][1]

Forms

rēgnum n (genitive rēgnī); second declension[1]

Etymology

It is the neuter of an adjective ⟨*rēgnus⟩, from rēx “king”, stem ⟨rēg-⟩, with the suffix ⟨-nus⟩.[1][2] Isidore says ⟨regnum⟩ is named from kings, as kings are named from ruling.[3]

Earliest recorded meaning

The OLD's earliest citations are from Plautus, of kingship and of a kingdom.[2] Köbler's first source is Cicero; he dates Plautus c. 250–184 BC.[4]

Semantic evolution

It meant the office or power of a king, kingship, as in Plautus, and in Ennius government by a king, monarchy.[2] In Cicero it meant despotic rule, tyranny, and the territory of a king, a realm, and in Lucretius dominion.[2] From Plautus it also meant a community ruled by a king, a kingdom.[2]

In Ecclesiastical Latin it meant kingdom, reign.[5] Medieval Latin used it for majesty, the fisc, the great men of the realm, and a royal court.[6] British Medieval Latin used it for kingship and the period of a king's reign.[7] It survives in Italian regno, French règne and Spanish reino, and through Old French it gave English reign in the early 13th century, first meaning “kingdom”.[1][8]

Timeline

  • c. 250–184 BC – Plautus uses it of kingship.[2][4]
  • 204–169 BC – Ennius uses it of monarchy.[2][4]
  • 81–43 BC – Cicero uses it of tyranny and realms.[2][4]
  • early 13th century – English reign is recorded.[8]

Meanings

Noun

  1. Kingship, royal power.[2]
  2. Monarchy; tyranny.[2]
  3. Dominion.[2]
  4. A kingdom, realm.[2]
  5. (Medieval Latin) Majesty; the great men of the realm.[6]

Word family

  • interrēgnum
  • regnicola
  • rēgnō
  • vicerēgnum

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Isidore of Seville, Etymologiarum sive Originum libri XX, ed. W. M. Lindsay (Oxford, 1911).
  4. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  6. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  7. ^ 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
  8. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Regnum.” Etymologically, 16 Oct. 2026, etymologically.com/la/regnum. Accessed 16 Oct. 2026.

Last edited on . ·