I.that causes tremor or terror, terrible, dreadful, frightful, horrific (poet. and in postAug. prose): “bustum,” Lucr. 3, 906: “letum,” Verg. A. 12, 851: “ruinae (Aetnae),” id. ib. 3, 571: “lapsu (Harpyiarum),” id. ib. 3, 225: “fulmen,” Val. Fl. 2, 97: “acta,” id. 3, 423: “caesaries,” Luc. 2, 372: “poena,” Gell. 20, 1 fin.— Adv.: horrĭfĭcē , in a manner to cause dread, with affright: “horrifice fertur divinae Matris imago,” Lucr. 2, 609; 4, 36.
horrĭfĭcus , a, um, adj. horror-facio,