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"
"effective teaching methods"
"effective steps toward peace"
"made an effective entrance"
"his complaint proved to be effectual in bringing action"
"an efficacious law"
having legal efficacy or force;
"a sound title to the property"
- Quinine is an effectual preventive for malaria.
- The government hasn't worked out the effectual measures to combat unemployment.
- The practice has shown that the monitoring system is effectual.
- He felt his way to effectual practice through a multitude of trials and misconceptions.