terrificus
From LSJ
Φίλον δι' ὀργὴν ἐν κακοῖσι μὴ προδῷς → Amicum ob iram deserere cave in malis → Verrate einen Freund nicht in der Not aus Zorn
Latin > English (Lewis & Short)
terrĭfĭcus: a, um, adj. terreo-facio,
I that causes terror, frightful, terrific (poet.): (Curetes) cristae, Lucr. 2, 632; 5, 1314: caesaries capitis, Ov. M. 1, 179: vates, Verg. A. 5, 524: sacrum, Val. Fl. 1, 785: vaticinationes, Plin. Ep. 6, 20, 19.
Latin > French (Gaffiot 2016)
terrĭfĭcus,¹³ a, um (terreo, facio), effrayant, terrible : Lucr. 2, 632 ; Virg. En. 5, 624 ; Plin. Min. Ep. 6, 20, 19.