Noun inefficaciousness has 1 sense

1. inefficacy, inefficaciousness - a lack of efficacy
   --₁ is a kind of ineffectiveness, ineffectualness, ineffectuality
   

Inefficaciousness

noun

The state or quality of being inefficacious; lack of effectiveness or ineffectiveness.

Example Sentences:

• The inefficaciousness of the new medication disappointed the patients.
• Despite the high hopes, the scientist's experiment demonstrated the inefficaciousness of the proposed method.

adjective: inefficacious

Not producing the desired effect; ineffective or inefficacious in achieving a purpose.

Example Sentences:

• The inefficacious treatment only worsened the patient's condition.
• His inefficacious attempts to solve the problem frustrated his colleagues.

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