ĕf'ĭ-kə-sē
The property of being effective, of achieving results.
Inherent capacity for growth and development; potentiality.
ability (related)
(Countable) A skill or competence in doing; mental power; talent; aptitude. [First attested in the early 17 th century.]
The state or condition of being effectual.
inefficacy (antonym)
The condition of being ineffective
The state of being productive.
efficiency (related)
The ratio of the energy delivered by a machine to the energy supplied for its operation.
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Quality of being efficacious.
affect (related)
(Psychol.) An emotion or feeling attached to an idea, object, etc.
usefulness (related)
acceptability (related)
(Cinematography) An illusion produced by technical means (as in "special effect")
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The state or condition of being effectual.
unproductiveness (antonym)
The characteristic of being unproductive; lack of productiveness.
The power to affect, control or manipulate something or someone; the ability to change the development of fluctuating things such as conduct, thoughts or decisions.
tolerability (related)
cost-effectiveness (related)
validity (related)
bioavailability (related)
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allergenicity (related)
pharmacokinetics (related)
uselessness (antonym)
The quality of being useless
failure (antonym)
The condition or fact of being insufficient or falling short:
inefficiency (antonym)
An inefficient act, design, or procedure:
immunogenicity (related)
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toxicity (related)
Find another word for efficacy. In this page you can discover 29 synonyms, antonyms, idiomatic expressions, and related words for efficacy, like: effectiveness, potency, ability, effectuality, inefficacy, productiveness, efficiency, impotency, efficaciousness, affect and usefulness.
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