|1.||[ adjective ] 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"
|Related terms:||inefficacious effective effective efficacy|
|2.||[ adjective ] 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 transportation"-LewisMumford "effective teaching methods" "effective steps toward peace"
|Related terms:||ineffective impelling hard-hitting hard-hitting rough-and-ready impressive powerful useful efficient potent effectiveness|