τὸ κοῖλον τοῦ ποδὸς δεῖξαι → show the heels, show a clean pair of heels, show the hollow of the foot, run away
ἀναρίθμητος, ἀνάριθμος, ἀνήριθμος, βαιός, ἀγέννητος, ἄδοξος, ἀδόκιμος, δυσγενής, ψεφηνός, ἀμαυρός