Strong's G4333 — προσεργάζομαι (verb)
prosergazomai (pros-er-gad'-zom-ai) v.
1. to work additionally
2. (by implication) acquire besides
[from G4314 and G2038]
KJV: gain 
Root(s): G4314, G2038 
Hebrew root: ἐργάζομαι
Occurrences: 1