συνδιαγιγνώσκω
From LSJ
Σοφῷ παρ' ἀνδρὶ (Σοφοῦ παρ' ἀνδρὸς) πρῶτος εὑρέθη λόγος → Apud sapientem inventa est ratio primitus → Bei einem weisen Mann fand man zuerst Vernunft
English (LSJ)
A join with one in determining or decreeing, ἐμὲ... ᾧ ξυνδιέγνωτε πολεμεῖν Th.2.64, cf. D.C.43.25; distinguish at the same time, Gal.5.625, UP2.6.