τοῦ εἰδέναι χάριν ἡ πραγματεία → knowledge is the object of our inquiry, the aim of our investigation is knowledge
P. and V. σύμφωνος (Plato), συνῳδός (Plato), V. σύμφθογγος.
agreeing: P. ὁμογνώμων, ὁμονοητικός.