ἀτεκνία
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)
ἡ,
A childlessness, barrenness, Arist.Pol.1265b10, Ph. 1.201, etc.: pl., Arist.Pol.1265a41.
German (Pape)
[Seite 384] ἡ, Kinderlosigkeit, Arist. pol. 2, 3; Plut. Thes. 12.
