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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Example Sentences
Recent Examples of Synonyms for effectualness
Noun
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There’s still considerable doubt over the efficacy of AI agents in the workplace.—
Frank Landymore,
Futurism,
5 Feb. 2026 -
While early-stage trials are not designed to prove efficacy, the data could help validate epigenetic reprogramming as a viable strategy for neurodegenerative eye disease.—
Neetika Walter,
Interesting Engineering,
4 Feb. 2026
Noun
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Mixing grapefruit, whether as a juice or in a dietary supplement, with some medications can disrupt how the drugs are processed in your body, potentially causing dangerous side effects or loss of effectiveness.—
Ross Phan,
Verywell Health,
9 Feb. 2026
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Psyduck, one of the main Pokémon used by Misty in the series, was a water-type who could use powerful psychic moves, but the timing and effectiveness of its abilities was disrupted by its constant headaches.—
Jordan Moreau,
Variety,
9 Feb. 2026
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“Effectualness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectualness. Accessed 14 Feb. 2026.
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