pestifere
From LSJ
ἔνδον σκάπτε, ἔνδον ἡ πηγή τοῦ ἀγαθοῦ καί ἀεί ἀναβλύειν δυναμένη, ἐάν ἀεί σκάπτῃς → Dig within. Within is the wellspring of Good; and it is always ready to bubble up, if you just dig. | Look within. Within is the fountain of the good, and it will ever bubble up, if thou wilt ever dig.
Latin > French (Gaffiot 2016)
pestĭfĕrē, d’une manière désastreuse : Cic. Leg. 2, 13.
Latin > German (Georges)
pestiferē, Adv. (pestifer), verderblich, schädlich, Cic. de legg. 2, 13.