Definition of Efficacious

Ef`fi`ca´cious
a.1.Possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law.


Related Words

able, active, adequate, authoritative, capable, charismatic, charming, competent, consequential, effective, effectual, efficient, enchanting, equal to, estimable, functional, go, important, influential, magnetic, momentous, operational, operative, personable, persuasive, potent, powerful, practical, prestigious, productive, proficient, puissant, reputable, serviceable, strong, suasive, substantial, successful, telling, up to, useful, virtuous, weighty, winning


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