κακοήθειαkakoḗtheia

malignity, malevolence: Romans 1:29.

Greek (New Testament) · G2550

Same root

κακόςkakós · G2556worthless (intrinsically, such; whereas G4190 (πονηρός) properly refers to effects), i.e. (subjectively) depraved, or (objectively) injurious
ἦθοςēthos · G2239usage, i.e. (plural) moral habits

Where it appears

Appears 1 times in the Bible.

Romans 1:29 Their lives became full of every kind of wickedness, sin, greed, hate, envy, murder, quarreling, deception, malicious behavior, and gossip.

Source: G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), public domain.