Efficacious - Definition
efficacious
adj 1: 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"
[ant: inefficacious]
2: 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" [syn: effective, effectual,
efficacious] [ant: ineffective, ineffectual,
uneffective]