Strong's G4903 — συνεργέω (verb)
sunergeo (soon-erg-eh'-o) v.
1. to be a fellow-worker, i.e. co-operate
[from G4904]
KJV: help (work) with, work(-er) together 
Root(s): G4904 
Hebrew root: συνεργός
Occurrences: 5