ἀμαλακιστία
From LSJ
ἡμῶν δ' ὅσα καὶ τὰ σώματ' ἐστὶ τὸν ἀριθμὸν καθ' ἑνός, τοσούτους ἔστι καὶ τρόπους ἰδεῖν → whatever number of persons there are, the same will be found the number of minds and of characters
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.