in-sŭpĕrābĭlis, e, adj., that cannot be passed over.
I Lit., insurmountable : transitus Alpium, Liv. 21, 23: via, id. ib. 36. —
II Transf.
A Unconquerable : genus bello, Verg. A. 4, 40; cf.: caput bello, Ov. M. 12, 613.— Of a disease, incurable : valetudo, Plin. Ep. 2, 2.—
B Unavoidable , inevitable : fatum, Ov. M. 15, 807: necessitas fati, Gell. 13, 1.—Adv.: insŭpĕrābĭ-lĭter , unconquerably , Aug. Civ. Dei, 5, 8.