Strong's G2616 — καταδυναστεύω (verb)
katadunasteuo (kat-ad-oo-nas-tyoo'-o) v.
1. to exercise dominion against, i.e. oppress
[from G2596 and a derivative of G1413]
KJV: oppress 
Root(s): G2596, G1413 
Hebrew root: δυνάστης
Occurrences: 2