Origin: Latin suffix -al
Effectual has 3 different meanings across 1 category:
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"
Producing the intended result; entirely adequate.