inefficaciousness

noun

Lack of efficacy.

Similar
ineffectivenessinefficacy
Scrabble 27
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Meanings

nouninefficaciousness (uncountable)
  1. uncountableLack of efficacy.

    Synonyms: ineffectiveness, inefficacy

Synonyms & antonyms

nounLack of efficacy.

Similar
ineffectivenessinefficacy

More synonyms by meaning

nouna lack of efficacy

Similar
inefficacy
Broader
ineffectivenessineffectualnessineffectuality
Also see
inefficacy

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From inefficacious + -ness.

Full word history & related roots →
Cite this entry
APA

inefficaciousness. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/inefficaciousness

MLA

“inefficaciousness.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/inefficaciousness. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “inefficaciousness,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/inefficaciousness.

Source: inefficaciousness on Wiktionary, CC BY-SA 4.0.