- Confidence
- Established
- Formation
- Derivation
- First attested
- Cicero
- Ultimate origin
- Latin (faciō)
Pronunciation
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
Meanings
Noun
- Efficient power, influence, efficiency.[2]
Related words
- efficiō
- efficiēns
- effectīvus
- English efficiency
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ 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
- English efficiency
Cite this entry
“Efficientia.” Etymologically, 16 Oct. 2026, etymologically.com/la/efficientia. Accessed 16 Oct. 2026.
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