Adjective: effectual i'fek-choo-ul
- Producing or capable of producing an intended result or having a striking effect
"his complaint proved to be effectual in bringing action";
- effective, efficacious
- Having legal efficacy or force
"The court found the contract to be effectual";
- legal, sound
See also: effectiveness, effectivity, effectuality, effectualness, efficacious, efficient, hard-hitting, impelling, impressive, potent, powerful, rough-and-ready, stiff, strong, telling, trenchant, useful, utile, valid