Synonyms and Antonyms of effectual
- after trying many remedies for the condition, he finally found an effectual one that actually helped
hyperefficient, ultraefficient
accomplished, adept, consummate, experienced, expert, masterly, practiced (also practised), proficient, skilled, skillful, versed, veteran, virtuoso
cogent, convincing, killer, sound, striking, telling, valid
applicable, feasible, functional, practicable, practical, realizable, usable (also useable), workable