Dict: strongs - effectual

Strongs:

H7387 @ ריקם rêyqâm ray-kawm' From H7386; emptily; figuratively (objectively) {ineffectually} (subjectively) undeservedly: - without {cause} {empty} in {vain} void.

G1753 @ ἐνέργεια energeia en-erg'-i-ah From G1756; efficiency (energy): - operation strong (effectual) working.

G1754 @ ἐνεργέω energeō en-erg-eh'-o From G1756; to be active efficient: - do (be) effectual (fervent) be mighty in shew forth self work (effectually in).

G1756 @ ἐνεργής energēs en-er-gace' From G1722 and G2041; active operative: - effectual powerful.