ἀμαλακιστία
From LSJ
οἵ γε καὶ ἐν τῷ παρόντι ἀντιπάλως μᾶλλον ἢ ὑποδεεστέρως τῷ ναυτικῷ ἀνθώρμουν → whose navy, even as it was, faced the Athenian more as an equal than as an inferior
English (LSJ)
ἡ,
A incapability of being softened, hardness, etym. of Ἀμάλθεια, D.S.4.35.
German (Pape)
[Seite 115] ἡ, Unermüdbarkeit, Abhärtung, Diod. S. 4, 35.