Thesaurus

efficacy

noun

Synonyms and Antonyms of efficacy

the power to produce a desired result

questioned the efficacy of the alarms in actually preventing auto theft

Synonyms of efficacy

edge, effectiveness, effectualness, efficaciousness, efficacity, efficiency, productiveness

Words Related to efficacy

ability, capability, capacity

potency, puissance, strength

Near Antonyms of efficacy

inability, inadequacy, inadequateness, incompetence, incompetency

Antonyms of efficacy

ineffectiveness, ineffectuality, ineffectualness, inefficiency

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