effectual 1754 # energeo {en-erg-eh'-o}; from 1756; to be active, efficient: -- do, (be) {effectual} (fervent), be mighty in, shew forth self, work (effectually in).
effectual 1756 # energes {en-er-gace'}; from 1722 and 2041; active, operative: -- {effectual}, powerful.