Word:   
Definitions of efficacious:
  • adjective:   marked by qualities giving the power to produce an intended effect
    Example: "Written propaganda is less efficacious than the habits and prejudices...of the readers-Aldous Huxley"
  • adjective:   producing or capable of producing an intended result or having a striking effect
    Example: "An efficacious law"

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See efficacious used in context: 3 definitions

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