Strong's G4865 — συναγωνίζομαι (verb)
sunagonizomai (soon-ag-o-nid'-zom-ai) v.
1. to struggle in company with
2. (figuratively) to be a partner (assistant)
[from G4862 and G75]
KJV: strive together with 
Root(s): G4862, G75 
Hebrew root: ἀγωνίζομαι
Occurrences: 1