extrilidus
From LSJ
τὸ κακὸν δοκεῖν ποτ' ἐσθλὸν τῷδ' ἔμμεν' ὅτῳ φρένας θεὸς ἄγει πρὸς ἄταν → evil appears as good to him whose mind the god is leading to destruction (Sophocles, Antigone 622f.)
Latin > English (Lewis & Short)
extrilidus: a, um, adj.,
I unterrified, dauntless: hominem conspicimus impavidum et extrilidum, Gell. 19, 1, 6 Hertz. (al. extimidum).