ἐπείη

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

Source

German (Pape)

[Seite 910] 3. Pers. sing. opt. praes. von ἔπειμι.

French (Bailly abrégé)

3ᵉ sg. opt. prés. de ἔπειμι¹.

Greek Monotonic

ἐπείη: γʹ ενικ. ευκτ. του ἔπειμι (εἰμί, sum).

Russian (Dvoretsky)

ἐπείη: эп. 3 л. sing. praes. opt. к ἔπειμι I.