What is the meaning of efficacious?

adjective

  • Marked by qualities giving the power to produce an intended effect.
    • usage: "written propaganda is less efficacious than the habits and prejudices... Of the readers-Aldous Huxley; "the medicine is efficacious in stopping a cough"
  • Producing or capable of producing an intended result or having a striking effect.
    • usage: "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made an effective entrance"; "his complaint proved to be effectual in bringing action"; "an efficacious law"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). efficacious. Retrieved September 22, 2026, from http://smartdefine.org/efficacious/definitions/1173114
ChicagoWordNet. 2010. "efficacious" http://smartdefine.org/efficacious/definitions/1173114 (accessed September 22, 2026).
HarvardWordNet 2010, efficacious, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/efficacious/definitions/1173114>.
MLAWordNet. "efficacious" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/efficacious/definitions/1173114>
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