δυσεκβίαστος
From LSJ
Δύο γὰρ, ἐπιστήμη τε καὶ δόξα, ὧν τὸ μὲν ἐπίστασθαι ποιέει, τὸ δὲ ἀγνοεῖν → Two different things are science and belief: the one brings knowledge, the other ignorance
English (LSJ)
[ῐ], ον,
A hard to overpower, ἐπιθυμίαι Plu.2.127a, cf.Cor.2, Eun.VSp.500 B.
German (Pape)
[Seite 678] dem man schwer etwas entreißen kann, Plut. Ages. 2 u. öfter; übh = unbezwinglich.