Efficaciousness antonyms

What is the opposite word for Efficaciousness?

Antonyms for efficaciousness
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Efficaciousness Thesaurus
Definitions of Efficaciousness
Efficaciousness Synonyms
Nearby Words
efficacy, efficacious, efficaciously
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Opposite words of efficaciousness
Image search results for Efficaciousness
ability, competence, aptitude ability, competence, aptitude ability, competence, aptitude ability, competence, aptitude ability, competence, aptitude
Cite this Source
Antonyms for Efficaciousness. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/antonyms/efficaciousness
Antonyms for Efficaciousness. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/antonyms/efficaciousness>.
Antonyms for Efficaciousness. 2016. Accessed August 10, 2026. https://thesaurus.plus/antonyms/efficaciousness.