δυσκαταγώνιστος
From LSJ
τῶν Λειβηθρίων ἀμουσότερος → more uncultured than Leibethrans, more uncultured than the people of Leibethra, lowest degree of mental cultivation
English (LSJ)
ον,
A hard to overcome, Plb.15.15.8, D.H.3.7; hard to refute, Id.Rh.8.3; τὸ δ. impregnability, Corn.ND20.