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Definition of Efficacious
1. Adjective. Marked by qualities giving the power to produce an intended effect. "The medicine is efficacious in stopping a cough"
Attributes: Efficaciousness, Efficacy
Also: Effective, Effectual
Similar to: Effective
Derivative terms: Efficaciousness, Efficacy
Antonyms: Inefficacious
Also: Effective, Effectual
Similar to: Effective
Derivative terms: Efficaciousness, Efficacy
Antonyms: Inefficacious
2. Adjective. Producing or capable of producing an intended result or having a striking effect. "An efficacious law"
Exact synonyms: Effective, Effectual
Attributes: Effectiveness, Effectivity, Effectuality, Effectualness
Similar to: Hard-hitting, Trenchant, Impelling, Impressive, Telling, Rough-and-ready
Also: Efficient, Potent, Stiff, Strong, Powerful, Useful, Utile
Derivative terms: Effect, Effectiveness, Effectivity, Effectuality, Effectualness, Efficaciousness, Efficacy
Antonyms: Ineffective
Attributes: Effectiveness, Effectivity, Effectuality, Effectualness
Similar to: Hard-hitting, Trenchant, Impelling, Impressive, Telling, Rough-and-ready
Also: Efficient, Potent, Stiff, Strong, Powerful, Useful, Utile
Derivative terms: Effect, Effectiveness, Effectivity, Effectuality, Effectualness, Efficaciousness, Efficacy
Antonyms: Ineffective
Definition of Efficacious
1. a. Possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law.
Definition of Efficacious
1. [adj]
Lexicographical Neighbors of Efficacious
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