I / insustentābĭlis
adjective

insustentābĭlis

neut. in-sustentābĭle
unbearable; intolerable
unbearable, intolerable (late Lat.): dominatio, Lact. 7, 16, 4: dolor, id. Mort. Pers. 49; Cael. Aur. Acut. 2, 16, 100.