Efficacious Meaning in English
word
Definition
Producing the intended result; effective, especially used for things like medicines, treatments, or methods.
Usage & Nuances
'Efficacious' is formal and less common in everyday speech than 'effective.' Used mostly in professional, scientific, or academic contexts, especially with medicines, medical treatments, or processes. Not for people; say 'effective person' instead.
Example Sentences
The new cleaning product proved to be efficacious.
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Doctors recommend efficacious treatments for serious diseases.
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Studies show this vaccine is highly efficacious in preventing infection.
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Despite many attempts, only a few methods have proven truly efficacious.
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Herbal remedies are sometimes efficacious, but results can vary widely.
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This medicine is very efficacious against the flu.
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