marked by qualities giving the power to produce an intended effect
"written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"
effective, effectual, efficacious(adj)
producing or capable of producing an intended result or having a striking effect
"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"
Origin: From efficacieux, from efficax, from efficere; see effect.
possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law
Chambers 20th Century Dictionary
ef-fi-kā′shus, adj. able to produce the result intended.—adv. Efficā′ciously.—ns. Efficā′ciousness; Efficac′ity; Ef′ficacy, virtue: energy. [Fr.,—L. efficax, efficacis—efficĕre.]
The numerical value of efficacious in Chaldean Numerology is: 1
The numerical value of efficacious in Pythagorean Numerology is: 7
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