Etymologically

excusatio

Etymology and origin of the Latin word excusatio

Confidence
Probable
Formation
Derivation
First attested
120–67 BC, Sisenna
Ultimate origin
Latin (causa)
Etymology tree
inherited borrowed derived
Latin excuso
French excuser
French excuse
Latin excusatio

Pronunciation

  • Classical: [ɛk.skuːˈsaː.ti.oː][1]
  • Ecclesiastical: [ek.skuˈs̬at.t͡si.o][1]

Forms

excūsātiō f (genitive excūsātiōnis); third declension[1] It is also spelled excussātiō.[2]

Etymology

It is formed from Latin excūsō (“to excuse”) + -tiō.[3][1][2] ⟨Excūsō⟩ is ex- (“out of”) and causa (“cause, case”); de Vaan lists it among the derivatives of ⟨causa⟩, whose origin is unclear: Walde–Hofmann connected it with cūdō (“to strike”), while Ernout–Meillet doubted any Indo-European origin.[4]

Earliest recorded meaning

Köbler gives Cicero as its first author,[5] but the OLD has it already in Sisenna's history, of a man pleading his case and excuse before the consul.[3]

Semantic evolution

It is the offering of an excuse or a justification, as Cicero's excuse for a fault, and a plea to be excused from a duty, above all a public one, Cicero says a man thought no excuse could be right when he was called to defend the state.[3][2] In law, as in Ulpian, it is exemption from a burden such as a guardianship, and in Seneca the act of excusing or indulgence.[3]

Church Latin glosses it “excuse, justification, dispensation”.[6]

Timeline

  • 120–67 BC – Sisenna of an excuse offered to a consul.[3][5]
  • 81–43 BC – Cicero of excuses and of pleas to be excused.[3][2][5]
  • 4 BC–65 AD – Seneca of indulgence.[3][5]
  • before 223 AD – Ulpian of exemption from guardianship.[3][5]

Meanings

Noun

  1. An excuse, justification.[3][1][2]
  2. A plea to be excused (from a duty).[3]
  3. (law) Exemption, immunity, (Ecclesiastical Latin) a dispensation.[3][6]
  4. Excusing, indulgence.[3]

Word family

  • excusatiuncula

Usage notes

Döderlein distinguishes pūrgātiō, clearing oneself by showing a charge to be groundless, from excūsātiō, admitting a wrong but pleading circumstances that lessen it.[7]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ 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
  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 d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
Cite this entry

“Excusatio.” Etymologically, 19 Oct. 2026, etymologically.com/la/excusatio. Accessed 19 Oct. 2026.

Last edited on . ·