effectual Synonyms

efficacious effective sound legal impactful sounder sure-handed serviceable puissant productive practical practicable powerful potent plenipotent persuasive operatively operative omnipotent multipotent strong successful telling multipurpose nimble-fingered all-purpose equal to influential worthwhile workmanlike working valuable valid utilitarian utile in force useful organisational usable lawful able determinative contributive constructive competent compelling cogent capable binding beneficial