Strong's G1557 — ἐκδίκησις (noun)
ekdikesis (ek-dik'-ay-sis) n.
1. vindication, retribution
[from G1556]
KJV: (a-, re-)venge(-ance), punishment 
Root(s): G1556 
Hebrew root: ἐκδικέω
Occurrences: 9