efficacious definition, efficacious meaning | English dictionary

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efficacious

  

      adj   capable of or successful in producing an intended result; effective as a means, remedy, etc.  
     (C16: from Latin efficax powerful, efficient, from efficere to achieve; see effect)  
  efficaciously      adv  
  efficacy  
  efficaciousness      n  
English Collins Dictionary - English Definition & Thesaurus  
Collins

efficacious

  
  
active, adequate, capable, competent, effective, effectual, efficient, energetic, operative, potent, powerful, productive, serviceable, successful, useful  
  
Antonyms     
   abortive, futile, ineffective, ineffectual, inefficacious, unavailing, unproductive, unsuccessful, useless  

English Collins Dictionary - English synonyms & Thesaurus  

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