Horrifico, horrificas, pen. cor. horrificare. Vir. To make afearde, to make to feare or treble.
Horrificus, pe. cor. Adiect. vthorrificum bellum. Cic.Terrible, dreadefull, that maketh quake for feare or colde.Bustum horrificum. Lucr. Cæsaries horrifica. Lucan. A terrible heade of haire.Lapsus horrificus.Virg.
Lewis and Short: Latin dictionary
horrĭfĭco, āvi, ātum, 1, v. a. [horrificus], to make rough or terrible, to cause terror (poet. and in post-Aug. prose): flatu placidum mare matutino Horrificans Zephyrus, ruffling, = crispans, Cat. 64, 271: ore ferarum Et rictu horrificant galeas, Sil. 3, 389: carcer, catenae, fuga, exsilium horrificaverant dignitatem,