affabiliter
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
Latin > English (Lewis & Short)
affābĭlĭter: adv., v. affabilis.
Latin > German (Georges)
affābiliter, Adv. m. Superl. (affabilis), leutselig, alloqui, Spart. Car. 3, 2: affabilissime dicere, Gell. 16, 3, 5.
Latin > English
affabiliter affabilitius, affabilitissime ADV :: conversationally, in informal/friendly discourse