EFFICACIOUSNESS

Pronunciation (US): (GB):

Meaning:

Capacity or power to produce a desired effect

Example:

concern about the safety and efficacy of the vaccine

Synonyms:

efficaciousness; efficacy

Classified under:

Nouns denoting attributes of people and objects

Hypernyms ("efficaciousness" is a kind of...):

effectiveness; effectivity; effectuality; effectualness (power to be effective; the quality of being able to bring about an effect)

Attribute:

efficacious (marked by qualities giving the power to produce an intended effect)

inefficacious (lacking the power to produce a desired effect)

Derivation:

efficacious (producing or capable of producing an intended result or having a striking effect)

efficacious (marked by qualities giving the power to produce an intended effect)