What is another word for efficacious?

Need synonyms for efficacious? Here's a list of similar words from our thesaurus that you can use instead.

Adjective
(of something inanimate or abstract) Successful in producing a desired or intended result
“What is the evidence that narcotic analgesia is efficacious in relieving chronic nonmalignant pain?”
Adjective
Denotes the effectiveness or dominance of a particular action
Adjective
Having great impact or influence
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Adjective
Denotes a constructive or productive feeling
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Adjective
Incapable of going wrong or being misused
Adjective
Experiencing luck and good fortune
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Adjective
Having, showing, or done with good judgment or sense
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Adjective
Being in effective or current operation, action, or force
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Adjective
Present as the strongest or main element
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Adjective
Providing great utility or usefulness
Adjective
Offering or producing the greatest advantage
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