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
ἐγκατατίθημι, ἐνίστημι, δέω, διαπίπτω, ἐντίθημι, ἀμπίσχω, ἀμπέχω, ἀμφιβάλλω, ἀναβάλλω, ἐνδύνω, ἐνδύω, ἀφανίζω, ἐγκαταδύνω, ἐκφοιτάω, αἴρω, ἀποκρύπτω, ἐννυχεύω, δύω, δύνω, ἀμφιδύω, ἐξαρτάω, ἀμφιέννυμι, ἀμφιάζω, ἕννυμι, ἐνδιδύσκω, ἀμπισχνοῦμαι