Strong's G2610 — καταγωνίζομαι (verb)
katagonizomai (kat-ag-o-nid'-zom-ai) v.
1. to struggle against
2. (by implication) to overcome
[from G2596 and G75]
KJV: subdue 
Root(s): G2596, G75 
Hebrew root: ἀγωνίζομαι
Occurrences: 1