ἀπανίστημι
From LSJ
οὐ δικαίως θάνατον ἔχθουσιν βροτοί, ὅσπερ μέγιστον ῥῦμα τῶν πολλῶν κακῶν → unjustly men hate death, which is the greatest defence against their many ills | men are not right in hating death, which is the greatest succour from our many ills
English (LSJ)
A make rise up and depart, send away, τὴν στρατιήν Hdt. 3.156, 6.133; cause to depart, τοὺς Ἀθηναίους Th.2.70. II Pass., with aor. 2 and pf. Act., and fut. Med., arise and go away, depart again, Hdt.9.87; ἀπὸ τῆς πόλιος ib.86; ἐκ τῆς Μακεδονίας Th.1.61; Ποτειδαίας ib.139; esp. leave one's country, emigrate, ib.2.