Etymologically

effective

Etymology and origin of the English word effective

Confidence
Established
Formation
Borrowing
First attested
c. 1425
Borrowed from
Middle French effectif via Middle English
Ultimate origin
Latin (efficiō)

Pronunciation

  • IPA: /ɪˈfek.tɪv/[1]

Etymology

It is inherited from Middle English effective,[2] borrowed from Middle French effectif,[3][2] from Late Latin effectīvus (“productive, effective”),[3][2][4] from effectus, past participle of efficere (“to work out, accomplish, bring about”),[3][2] the source of effect.[3][5]

Earliest recorded meaning

Serving to bring about an intended purpose: the late 14th century in Etymonline,[3] the 14th century in Merriam-Webster.[2] The OED's earliest sense, “having the function of carrying into effect”, is from about 1425.[6]

Semantic evolution

The sense “concerned in producing an event or condition” is from 1594,[6] and “having an effect, attended with a result” from 1760.[6] Of military forces, “fit for duty or action”, it is from the 1680s,[3] and the noun, a soldier fit for service, is from 1722.[7][2] In mechanics and economics, effective described the part of a force that does useful work, from 1798.[6] Effective range, the distance at which a weapon works, is from 1859.[6] “In effect, in operation”, as in a law effective from a date, and “existing in fact, actual” are also current senses.[8][7] “Producing a strong impression; striking” is another.[8][7]

Timeline

  • c. 1425 – executing, accomplishing.[6]
  • 1594 – producing an event or condition.[6]
  • 1680s – of soldiers, fit for duty.[3]
  • 1722 – noun, a soldier fit for service.[2]
  • 1760 – having an effect.[6]
  • 1859 – effective range.[6]

Modern meaning

Adjective

  1. Producing the intended or expected result.
  2. Making a strong impression; striking.
  3. In operation; in force: effective from Monday.
  4. Existing in fact; actual.
  5. Ready for service or action, especially in war.

Noun

  1. A soldier or piece of military equipment ready for combat.

Word family

  • effectiveness
  • effectivity
  • effectively
  • ineffective
  • noneffective
  • subeffective
  • supereffective
  • effect
  • effectual
  • efficacious
  • efficacity
  • efficacy
  • efficiency
  • efficient

Usage notes

Effective, effectual, efficacious and efficient all mean “producing a desired effect”.[8] Effective and efficacious stress the power to produce it, effectual is used chiefly of the result, and efficient also implies a minimum of effort or waste.[8]

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 e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  3. ^ a b c d e f g Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ Pearsall, Judy, ed. (1998), The New Oxford Dictionary of English, Oxford: Clarendon Press
  6. ^ a b c d e f g h i Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
  7. ^ a b c Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  8. ^ a b c d The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin

Related etymologies

Cite this entry

“Effective.” Etymologically, 15 Oct. 2026, etymologically.com/en/effective. Accessed 15 Oct. 2026.

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