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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
  • Lack of self-efficacy Lahey explains that kids who never have to deal with the consequences of their actions end up feeling a lack of self-efficacy.
    — Cheryl Maguire, Parents, 1 Sep. 2026
  • The need-to-know this morning Alumis said its experimental treatment for lupus failed to achieve the efficacy goals of a mid-stage clinical trial.
    — Helen Branswell, STAT, 1 Sep. 2026
Definition of efficacy
Noun
  • However, low-carb diets generally have more evidence supporting their effectiveness in improving blood sugar.
    — Jillian Kubala, HEALTH, 17 Sep. 2026
  • Lockheed Martin says the missile offers greater range and effectiveness than existing air-to-air weapons.
    — Aamir Khollam, Interesting Engineering, 17 Sep. 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 21 Sep. 2026.

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