Lewis & Short

mĕdullĭtus, adv. [medulla], in the marrow, to the very marrow, in the inmost part (ante- and post-class.).

  1. I. Lit.: medullitus aquiloniam intus servat frigedinem, Varr. ap. Non. 139, 9.
  2. II. Trop., inwardly, from the heart, thoroughly: qui mortalibus Versus propinas flammeos medullitus, Enn. ap. Non. 33, 7, and 139, 14 (Sat. v. 7 Vahl.): ut videas eam medullitus me amare, heartily, in one’s inmost soul, Plaut. Most. 1, 3, 86: ostendit sese jam mihi medullitus, id. Truc. 2, 4, 85: gemens, Amm. 14, 1, 9: dolore commotus, App. M. 10, p. 251.