ημιτέλεια

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

Greek Monolingual

ἡμιτέλεια, ἡ (Α) ημιτελής
η απαλλαγή από μισό τέλος, όπως π.χ. φόρο, ποινή κ.λπ.