mortificus

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

mortĭfĭcus, a, um, adj. [mors - facio],

deadly, fatal (eccl. Lat.): cibus, Tert. Carm. adv. Marc. 4, 5: mortifico vulnere ictus, v. l. ap. Val. Max. 5, 6, 1 (Halm).