favorabiliter
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
Latin > English (Lewis & Short)
făvōrābĭlĭter: adv., v. preced.
Latin > French (Gaffiot 2016)
făvōrābĭlĭtĕr¹⁶ (favorabilis), avec faveur, avec succès : Quint. 4, 3, 1