Synonyms for effectual

Adjective

1. effectual (vs. ineffectual), effective#1, effectual#2, efficacious

usage: sufficient to produce a result; "a man to whom painting was but another and less effectual way of writing dramas or novels or history"

2. effective (vs. ineffective), effectual, efficacious, hard-hitting, trenchant, impelling, impressive, telling, rough-and-ready, efficacious, efficient, potent#3, strong, powerful, useful#1, utile

usage: 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"

3. effectual, potent (vs. impotent), strong

usage: exerting or capable of exerting strong physiological or chemical effects; "an effectual vaccine"