Etymologically

efficient

Etymology and origin of the English word efficient

Confidence
Established
Formation
Borrowing
First attested
c. 1380
Borrowed from
Old French efficient via Middle English
Ultimate origin
Latin (efficere)

Pronunciation

  • IPA: /ɪˈfɪʃ.ənt/, /əˈfɪʃ.ənt/[1]

Etymology

It is inherited from Middle English efficient, borrowed from Old French efficient and directly from Latin efficiēns (“effective, producing, active”), the present participle of efficere (“to work out, accomplish”),[2][3] from ex- (“out”) and facere (“to do”).[2] It is related to effect and efficacy.[3][4]

Earliest recorded meaning

Producing an immediate effect, causing: about 1380 in Chaucer's Boethius according to Barnhart, 1398 in the OED, chiefly in efficient cause, the cause that makes a thing what it is.[3][5][4]

Semantic evolution

The current sense, productive or competent, working well with little waste of effort, is from 1787.[2][5][4] In the 19th century a volunteer soldier qualified for service was an efficient (1864).[5] Efficiency is from 1593, in Hooker's Ecclesiastical Polity.[3]

Timeline

  • c. 1380 – causing an effect.[3]
  • 1593 – efficiency.[3]
  • 1787 – competent, productive.[2][5]

Modern meaning

Adjective

  1. Working or producing well with little waste of time, money or effort.
  2. Of a person, capable and competent.
  3. (philosophy) Producing a direct effect; causing.

Word family

  • efficiently
  • cost-efficient
  • nonefficient
  • superefficient
  • efficient cause

References

  1. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  2. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c d e f Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b c Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  5. ^ a b c d Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Efficient.” Etymologically, 16 Oct. 2026, etymologically.com/en/efficient. Accessed 16 Oct. 2026.

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