συμμανθάνω
From LSJ
ἄλογον δὴ τὸ μήτε μάχης ἄρξασθαι μήτε τοὺς φίλους φυλάξαι, ἐὰν ὑπό γε τῶν βαρβάρων ἀδικῆσθε → It is irrational neither to begin battle nor to guard the friends, if you are ever wronged by the foreigners
English (LSJ)
A learn along with, share in the knowledge, τινι X.Smp. 2.20; ὁ συμμαθών one that is accustomed to a thing, Id.An.4.5.27; οὐδεὶς ἐπίσταταί με συμμαθεῖν τόπος no place knows that I have shared its secret, S.Aj.869 (lyr., s.v.l.; διδάξαι Sch.).
