Etymologically

immunitas

Etymology and origin of the Latin word immunitas

Confidence
Established
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origin
Latin (mūnus)
Etymology tree
inherited borrowed derived
Latin immunis
English immune
Latin immunitas

Pronunciation

  • Classical: [ɪmˈmuː.nɪ.taːs][1]
  • Ecclesiastical: [imˈmuː.ni.tas][1]

Forms

immūnitās f (genitive immūnitātis); third declension[1] It is also spelled inmūnitās.[2][3]

Etymology

It is from Latin immūnis (“exempt, free”) + -tās.[2][1] immūnis is formed from in- (“not”) and the stem of mūnus (“duty, obligation”), which de Vaan traces to Proto-Italic *moini- (“duty, obligation, task”); its Indo-European source, perhaps meaning exchange, is uncertain.[1][4]

Earliest recorded meaning

In the OLD's earliest quotation Cicero asks what exemption from tax, what citizenship, what reward someone has not sold.[2]

Semantic evolution

It is exemption from taxes or tribute, and more widely from any public service, burden or duty: Caesar writes that the Druids are exempt from military service and all other burdens.[2][3] Cicero has the rare genitive plural ⟨immūnitātium⟩.[3] In the Frankish kingdoms it was the privilege of immunity: first exemption from public charges, then a ban on royal agents entering the privileged estate.[5] English immunity comes from it, partly through Old French, from the late 14th century.[6]

Timeline

  • 81–43 BC – Cicero of exemption from tax.[2][7]
  • c. 50 BC – Caesar of the Druids' exemption from all burdens.[2][3][7]
  • medieval – The Frankish privilege of immunity.[5]
  • late 14th century – English immunity.[6]

Meanings

Noun

  1. Exemption from taxes or tribute.[2][1]
  2. Exemption from any public service, burden or duty, immunity.[2][3][1][8]
  3. (Medieval Latin) The privilege of immunity of an estate from royal officials.[5]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b c Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  6. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  8. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Cite this entry

“Immunitas.” Etymologically, 20 Oct. 2026, etymologically.com/la/immunitas. Accessed 20 Oct. 2026.

Last edited on . ·