ἀκοός
From LSJ
τὸ λακωνίζειν πολὺ μᾶλλόν ἐστιν φιλοσοφεῖν ἢ φιλογυμναστεῖν → to behave like a Lacedaemonian is much more to love wisdom than to love gymnastics (Plato, Protagoras 342e6)
English (LSJ)
όν, A = ἀκουστικός, Pl.Com.226.
Greek (Liddell-Scott)
ἀκοός: -όν, = ἀκουστικός, Πλάτ. Κωμ. Ἄδηλ. 61.