Etymologically

efficientia

Etymology and origin of the Latin word efficientia

Confidence
Established
Formation
Derivation
First attested
Cicero
Ultimate origin
Latin (faciō)
Etymology tree
inherited borrowed derived
Latin efficientia
English efficiency

Pronunciation

  • IPA (Classical): [ɛf.fɪ.kiˈɛn.ti.a][1]
  • IPA (Ecclesiastical): [ef.fi.t͡ʃiˈɛn.t͡si.a][1]

Forms

efficientia f (genitive efficientiae); first declension[1]

Etymology

It is from ⟨efficiēns⟩, the present participle of efficiō “to bring about”, with the suffix -ia.[2][1][3]

Earliest recorded meaning

Köbler's first source is Cicero, whom he dates 81–43 BC, and Cicero uses it of the power of the sun.[4][5][6]

Semantic evolution

It meant efficient power, the capacity to produce an effect, influence, mostly in philosophical language, as in Cicero's De natura deorum and De fato.[2][5][6]

British Medieval Latin glossaries explain it as operation, effect.[7] It gave English efficiency in the 1590s, “power to accomplish something”.[3]

Timeline

  • 81–43 BC – Cicero uses it.[4][6]
  • 1590s – English efficiency is recorded.[3]

Meanings

Noun

  1. Efficient power, influence, efficiency.[2]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  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

Borrowed into

Cite this entry

“Efficientia.” Etymologically, 16 Oct. 2026, etymologically.com/la/efficientia. Accessed 16 Oct. 2026.

Last edited on . ·