Effective

δραστήριος

drastḗrios

(having the power to produce a required effect or effects)

πρακτικός

praktikós

(having the power to produce a required effect or effects)

ἀνυστικός

anustikós

(producing a decided or decisive effect)

ἀνύσιμος

anúsimos

(producing a decided or decisive effect)

ἐνεργής

energḗs

(having the power to produce a required effect or effects)

ἐνεργητικός

energētikós

(having the power to produce a required effect or effects)