interfectōrĭus, a, um, adj. [interfector],
deadly , murderous (late Lat.), Aug. de Lib. Arb. 3, 25; Isid. Orig. 17, 7, 7.— Subst.: interfectōrĭum , i, n., a means of destruction , Ambros. de Elia et Jejun. 10, 37 fin. —Hence, adv.: interfectōrĭē , destructively , murderously , Aug. contr. Parm. 3, 2, 14.