What is another word for efficacious?

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Adjective Possessing efficacy effective potent productive effectual efficient powerful successful useful operative active adequate capable competent serviceable fruitful beneficial constructive helpful valuable worthwhile advantageous energetic influential puissant strong virtuous of assistance of help of use “What is the evidence that narcotic analgesia is efficacious in relieving chronic nonmalignant pain?” Find more words! 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Sentences with the word efficacious What is the meaning of the word efficacious? Words that rhyme with efficacious What is the adjective for efficacious? What is the adverb for efficacious? What is the noun for efficacious? Translations for efficacious Use our Synonym Finder Watch and Learn Nearby Words efficaciously efficaciousness efficacities efficacity efficacy efficiencies efficacies effeteness effetely effete effervescing effervesces 11-letter Words Starting With e ef eff effi effic effica efficac efficaci efficacio efficaciou