adj
efficacious
Efficacious (adj) means producing the effect that is wanted.
adj
1
Producing the effect that is wanted.
"This medicine is efficacious."
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Etymology
From Old French efficacieux (the source of -acious), from Latin efficāx ("efficacious") plus -ous, from efficere ("to effect, to accomplish"); compare effect.
Synonyms
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Related words
Rhymes for efficacious
See all rhymes for efficacious →Frequently asked questions
What is the meaning of efficacious?
"efficacious" (adj) means producing the effect that is wanted.
What is another word for efficacious?
Other words for "efficacious" include effectual, effective.
What is the opposite of efficacious?
The opposite of "efficacious" is inefficacious.
