fertiliter
From LSJ
κεραυνὸν ἐν γλώττῃ φέρειν → carry a thunderbolt on his tongue
Latin > English (Lewis & Short)
fertĭlĭter: adv., v. fertilis.
Latin > French (Gaffiot 2016)
fertĭlĭtĕr [inus.], fertilius (fertilis), plus abondamment : Plin. 34, 164.
Latin > German (Georges)
fertiliter, Adv. (fertilis), ergiebig, derelicta metalla fertilius reviviscunt, Plin. 34, 164.