συνεπεύχομαι

A. join in prayer, Th. 6.32; pray also to, [θεοῖς] συννάοις ς. Plu. 2.708c: c. acc. et inf., profess also that . ., Ar. Th. 951: c. inf. fut., make a vow also to . ., ς. τοῖς θεοῖς θύσειν X. An. 3.2.9.