sufficient to produce a result; "a man to whom painting was but another and less effectual way of writing dramas or novels or history"
If an action or plan is effectual, it succeeds in producing the results that were intended. This is the only effectual way to secure our present and future happiness. = effective ineffectual. producing the result that was wanted or intended = effective ineffectual
exerting or capable of exerting strong physiological or chemical effects; "an effectual vaccine
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"
Producing, or having adequate power or force to produce, an intended effect; adequate; efficient; operative; decisive
sufficient to produce a result; "a man to whom painting was but another and less effectual way of writing dramas or novels or history" exerting or capable of exerting strong physiological or chemical effects; "an effectual vaccine