What does efficious mean?
Efficious means (rare, nonstandard) Efficacious..
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Pronunciation varies by accent · adjective
(rare, nonstandard) Efficacious..
This remedy will be found speedily efficious in hoarseness due to excessive action of the vocal cords or resulting from an acute cold.
Had she not been cured at Oxford, no imputation could have fallen upon me, considering the circumstance of her pregnancy, and the virulence of the symptoms, for which I had used the most efficious remedies in the world.
[...] was found to be efficious in reducing pain and severity of swelling (Laupattarakasem et al. 1993).
Use efficious when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Efficious means (rare, nonstandard) Efficacious..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
This remedy will be found speedily efficious in hoarseness due to excessive action of the vocal cords or resulting from an acute cold.
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