FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

kakos κακός — kak-os' — apparently a primary word; worthless (intrinsically, such; whereas 4190 properly refers to effects), i.e. (subjectively) depraved, or (objectively) injurious:--bad, evil, harm, ill, noisome, wicked.

see GREEK for 4190