δυσφώρατος
From LSJ
Φιλοκαλοῦμέν τε γὰρ μετ' εὐτελείας καὶ φιλοσοφοῦμεν ἄνευ μαλακίας → Our love of what is beautiful does not lead to extravagance; our love of the things of the mind does not makes us soft.
English (LSJ)
ον, hard to detect, Plu.2.51d.
German (Pape)
[Seite 690] schwer zu ertappen, Plut. de adul. et am. discr. 7.