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
Relevance
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for effectualness
efficacy
Noun
-
Moreover, researchers have conducted thorough evaluations of the vaccines in pregnant women, confirming their safety and efficacy in this demographic.—
Dave Wessner,
Forbes.com,
29 May 2025 -
Realistically, this Phase I trial – which tests for safety and efficacy, as well as dose parameters – should be completed by some time next year, and if successful will move to the next stage, involving a larger population.—
Bronwyn Thompson,
New Atlas,
26 May 2025
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.
Cite this Entry
“Effectualness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/effectualness. Accessed 14 Jun. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share