amariter
From LSJ
ἔνδον σκάπτε, ἔνδον ἡ πηγὴ τοῦ ἀγαθοῦ καὶ ἀεὶ ἀναβλύειν δυναμένη, ἐὰν ἀεὶ 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 > English
amariter ADV :: with bitterness, acidly, spitefully, bitterly
Latin > English (Lewis & Short)
ămārĭter: adv., v. amarus.
Latin > French (Gaffiot 2016)
ămārĭtĕr, amèrement : Hier. Ep. 23, 1.
Latin > German (Georges)
amāriter, Adv. (v. amarus), bitterlich = heftig, flere, Hier. ep. 23, 1: amarissime flere, Augustin. conf. 4, 6, 11.