effectualness

noun

Definition of effectualnessnext
as in efficacy
the power to produce a desired result the effectualness of that new cancer treatment has yet to be proven

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for effectualness
  1. efficacy
  2. effectiveness
Noun
  • The signal’s efficacy also fades over time, meaning that a single long outing to the zoo or park may be less beneficial than multiple outdoor jaunts of at least 30 minutes each.
    — Los Angeles Times, Los Angeles Times, 5 Nov. 2026
  • Hale says the frequency may also reduce the efficacy in the long run.
    — Norah O'Donnell, CBS News, 4 Nov. 2026
Definition of efficacy
Noun
  • Its effectiveness will depend on how federal agencies identify emerging threats and respond to companies or individuals that cross legal boundaries.
    — Aamir Khollam, Interesting Engineering, 6 Nov. 2026
  • Defense Secretary Pete Hegseth has repeatedly questioned whether women should serve in ground combat and special operations roles, arguing that their inclusion could undermine military effectiveness and physical standards.
    — James LaPorta, CBS News, 5 Nov. 2026
Definition of effectiveness
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Browse Nearby Words

effectually
effectualness
effectuate
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Cite this Entry

“Effectualness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectualness. Accessed 9 Nov. 2026.

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