ἀκόνα
From LSJ
κακὸς μὲν γὰρ ἑκὼν οὐδείς → no one is voluntarily wicked, no one is voluntarily bad
English (Slater)
ᾰκόνα
1 whetstone φαίης κέ νιν ἄνδρ' ἐν ἀεθληταῖσιν ἔμμεν Ναξίαν πέτραις ἐν ἄλλαις χαλκοδάμαντ ἀκόναν i. e. Lampon, who trained his sons (I. 6.73) met. δόξαν ἔχω τινἐπὶ γλώσσᾳ λιγυρᾶς ἀκόνας (Bergk: ἀκόνας λιγυρᾶς codd.: sens. dub., a reputation for clear sounding whetting of the praises of men? ) (O. 6.82)