αἰὲν ἀριστεύειν καὶ ὑπείροχον ἔμμεναι ἄλλων → always strive for excellence and prevail over others (Iliad 6.208, 11.784)
P. and V. σύμφωνος (Plato), συνῳδός (Plato), V. σύμφθογγος.
agreeing: P. ὁμογνώμων, ὁμονοητικός.