effectual

Etymology

It is inherited from Middle English effectuel, later effectual,^[2][3][4] borrowed from Anglo-Norman effectuel, also effectual,^[5][6][3] and its own source borrowed from Medieval Latin effectuālis.^[5][2][7][8] The OED finds the Latin adjective in British sources from the 11th century, and calls it post-classical;^[5] Etymonline and the AHD call it Late Latin and name Old French effectuel as the go-between.^[9][4] It is made from effectus (“accomplishment, performance; result”) and the suffix -ālis,^[5][3] and the noun comes from the past participle stem of efficiō (“to work out, accomplish”),^[9] from ex (“out”) and faciō (“to make, do”), from Proto-Indo-European *dhe- (“to set, put”).^[9] Italian effettuale is a parallel form, recorded before 1433.^[5]

Earliest recorded meaning

Powerful in effect, having strong effects: before 1398, in Trevisa's translation of Bartholomaeus Anglicus.^[5] Anglo-Norman already had the word by 1364–65, for what achieves the desired outcome or is valid.^[6] Etymonline dates the English word to the late 14th century,^[9] and Dictionary.com to 1350–1400.^[3]

Semantic evolution

The word's main line runs from having a strong effect to having the effect aimed at, recorded from 1410,^[5] and in law, where Anglo-Norman had used it early, to a document that is valid and binding, from 1431.^[5][6] Chaucer used it once, spelled effectueel.^[10][11] A further sense, of a prayer or plea, "earnest, urgent", from 1418, overlaps with affectual, since the Latin words in effect- and affect- were already interchangeable there;^[5] it is the sense of the Authorized Version's "the effectual fervent prayer of a righteous man availeth much".^[2] Johnson (1755) gave "productive of effects; powerful to a degree adequate to the occasion", and also "veracious; expressive of facts", from Henry VI, which he marked as out of use.^[12] Adam Smith's Wealth of Nations (1776) gave economics the term for the demand of buyers willing to pay a commodity's natural price, now mainly historical.^[5]

Timeline

• before 1398 – powerful in effect, having strong effects.^[5]
• 1410 – producing its intended effect, adequate to its purpose.^[5]
• 1418 – of a prayer or entreaty, earnest and urgent.^[5]
• 1431 – of a legal document or covenant, valid and binding.^[5]
• before 1450 – of service, diligent and zealous (obsolete by 1525).^[5]
• c. 1475 – actual, existing (obsolete by 1655).^[5]
• 1608 – pertinent, conclusive, to the point.^[5]
• 1776 – in economics, of the demand of consumers willing to pay the natural price.^[5]

Meanings

Adjective

1. Producing the result that was intended; adequate to its purpose, effective: an effectual remedy for the damp.^[13][2][5]
2. Of a contract or other legal document: having legal force; valid and binding.^[13][5][7]
3. (economics, historical) Of demand: coming from buyers willing to pay a commodity's natural price.^[5]
4. (obsolete) Of a prayer or plea: earnest, urgent.^[2][7][5]
5. (obsolete, 1475–1655) Actual, existing in fact.^[5][7]

Word family

• effectuality
• effectually
• effectualness

Related words

• effect
• effective
• efficacious
• efficacity
• efficacy
• efficiency
• efficient
• ineffectual
• effectuate

Usage notes

Etymonline distinguishes the word from effective: effectual is properly said of actions rather than agents and means having the effect aimed at, while effective is said of the agent or the thing done and means having great effect.^[9]

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
3. ^ a b c d Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
4. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
5. ^ a b c d e f g h i j k l m n o p q r s t u v w Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
6. ^ a b c Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
7. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
8. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
9. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
10. ^ Benson, Larry D., Glossarial Concordance to Middle English (Chaucer, Gower), Johns Hopkins University, github.com/jhu-digital-manuscripts/gcme
11. ^ Stratmann, Francis Henry (1891), A Middle-English Dictionary, revised by Henry Bradley, Oxford: Clarendon Press
12. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
13. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins