κακός (kakóskak-os'adjectiveevil)
[Grk] κακός LN: 20.18, 65.26, 72.22, 88.106 GK: G2805 Hebrew: אִוֶּלֶת, אָוֶן, אֱלִיל, הָלַךְ, זִמָּה, לוּץ, מָדֹון, מַעֲשֶׂה, מַצָּה, מְרֹרָה, עֶוֶל, עָמָל, צַר, רִיב, רַע, רָעַע, רֶשַׁע, שֹׁד
Derivation: apparently a primary word;
Strong's: worthless (intrinsically, such; whereas πονηρός properly refers to effects), i.e. (subjectively) depraved, or (objectively) injurious
KJV: --bad, evil, harm, ill, noisome, wicked.
See: πονηρός