συμφιλοτιμέομαι
From LSJ
κατὰ τὸ φιλόκαλον πειραθέντα κατανοῆσαι → see by working out the calculation
English (LSJ)
A join in zealous efforts, abs. or c. dat., D.S.2.18, Plu.2.813c, Luc.6, Supp.Epigr.4.319.2 (Panamara, ii A.D.), etc.; τινὶ εἴς τι IG22.1225.6 (Salamis, iii B.C.), D.S.19.52:—also Act., -τιμῶν τῇ τοῦ πατρὸς προαιρέσει Supp.Epigr.4.442 (Milet., ii B.C.).