δυσδάμαστος
From LSJ
προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
English (LSJ)
[δᾰ], ον hard to subdue: hence, hard to work, σίδηρος Sch.Hes.Sc. 122.
Spanish (DGE)
-ον
1 difícil de domar ἡμίονοι Eust.361.34.
2 difícil de romper ξίφος Eust.548.29, σίδηρος Sch.Hes.Sc.122G.