Strong's G4865 · Greek

συναγωνίζομαι

sunagonizomai · soon-ag-o-nid'-zom-ahee

from 4862 and 75; to struggle in company with, i.e. (figuratively) to be a partner (assistant)

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 * συν-αγωνίζομαι to strive together with, to help (prop., of sharing in a contest): c. dat. pers. et rei, Ro 15:30 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain