ὑπολέθριος
From LSJ
ἀκίνδυνοι δ' ἀρεταὶ οὔτε παρ' ἀνδράσιν οὔτ' ἐν ναυσὶ κοίλαις τίμιαι → but excellence without danger is honored neither among men nor in hollow ships
English (LSJ)
ον,
A almost fatal, dangerous, Hp.Coac.7.
German (Pape)
[Seite 1223] etwas verderblich, fast tödtlich, Hippocr.