|1.||[ adjective ] sufficient to produce a result|
"a man to whom painting was but another and less effectual way of writing dramas or novels or history"
|Related terms:||ineffectual effective|
|2.||[ adjective ] exerting or capable of exerting strong physiological or chemical effects|
"an effectual vaccine"
|3.||[ 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 hard-hitting impelling impressive hard-hitting rough-and-ready powerful useful efficient potent efficacious effectiveness|