δειόντως

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

Source

Spanish (DGE)

v. δεόντως.