πονηρόςponērósStrong's G4190

hurtful, i.e. evil (properly, in effect or influence, and thus differing from G2556, which refers rather to essential character, as well as from G4550, which indicates degeneracy from original virtue); figuratively, calamitous; also (passively) ill, i.e. diseased; but especially (morally) culpable, i.e. derelict, vicious, facinorous; neuter (singular) mischief, malice, or (plural) guilt; masculine (singular) the devil, or (plural) sinners

Derivation: from a derivative of G4192