διό
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)
Conj., for δι' ὅ,
A wherefore, on which account, Pl.R.358d, etc.; διὸ δή Th.2.21, Pl.Cra.412a, al.; διὸ καί, διὸ δὴ καί, Id.Phdr.258e, Smp. 203c; διόπερ Th.1.71, 120, 8.92, etc.
