Synonyms for


Similarity of adj efficacious

2 senses of efficacious

Sense 1:
efficacious (vs. inefficacious)
effective
Also See: effective#1, effectual#1, efficacious#2

Sense 2:
effective (vs. ineffective), effectual, efficacious
hard-hitting, trenchantimpellingimpressive, tellingrough-and-ready
Also See: efficacious#1; efficient#1; potent#3, strong#4, stiff#4; powerful#1; useful#1, utile#1
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