barbarice
From LSJ
Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)
Latin > English (Lewis & Short)
barbărĭcē: and barbărĭcum, adv., v. barbaricus.
Latin > French (Gaffiot 2016)
barbărĭcē, à la manière des barbares : Capit. Ver. 10, 6.