δυσβοήθητος
From LSJ
πείθεται πᾶς ἥδιον ἢ βιάζεται (Dio Cassius, Historiae Romanae 8.36.3) → it's always more pleasant to be persuaded than to be forced
English (LSJ)
ον,
A hard to help or cure, Hp.Coac.491, D.S.3.47, 11.15, Paul. Aeg.5.29: Comp., Dsc.Eup.2.159. Adv. -τως Gal.5.122.
German (Pape)
[Seite 677] dem schwer zu helfen ist, schwer abzuhelfen; D. Sic. 3, 47. 11, 15.