κακός worthless (intrinsically, such; whereas G4190 properly refers to effects), i.e. (subjectively) depraved, or (objectively) injuriousDerivation: apparently a primary word;KJV Usage: bad, evil, harm, ill, noisome, wicked. G4190
Thayer:1) of a bad nature 1a) not such as it ought to be 2) of a mode of thinking, feeling, acting 2a) base, wrong, wicked 3) troublesome, injurious, pernicious, destructive, baneful
κακός kakos kak-os' Apparently a primary word; worthless (intrinsically such; whereas G4190 properly refers to effects), that is, (subjectively) depraved, or (objectively) injuriousKJV Usage: bad, evil, harm, ill, noisome, wicked.