I / immītĭgābĭlis
adjective

immītĭgābĭlis

neut. immītĭgābĭle
(), , inmitigo
that cannot be softened; allayed; immitigable
that cannot be softened or allayed, immitigable (post-class.): ardor, Cael. Aur. Tard. 4, 3, 33.