γονιμώδης
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
English (LSJ)
ες,
A fruitful, Orph.H.55.19.
German (Pape)
[Seite 501] ες, fruchtbar, Αἰγύπτου λουτρά Orph. H. 55, 19.