Strong's G2550 — κακοήθεια (noun)
kakoetheia (kak-o-ay'-thei-ah) n.
1. bad character
2. (specially) mischievousness
[from a compound of G2556 and G2239]
KJV: malignity 
Root(s): G2556, G2239 
Hebrew root: ἤθος
Occurrences: 1