expetibilis
From LSJ
Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
Latin > English (Lewis & Short)
expĕtĭbĭlis: e, adj. id.,
I desirable: expetendum est, inquiunt, quod bonum est: expetibile, quod nobis contingit, cum bonum consecuti sumus, Sen. Ep. 117, 4: potentia, Boëth. Consol. 2, 6.
Latin > French (Gaffiot 2016)
expĕtĭbĭlĭs,¹⁶ e (expeto), très désirable : Sen. Ep. 117, 5 ; Boet. Cons. 2, 6.