αινόφρων

From LSJ

τὸ κοῖλον τοῦ ποδὸς δεῖξαιshow the heels, show a clean pair of heels, show the hollow of the foot, run away

Source

Greek Monolingual

αἰνόφρων (-ονος), -ον (Α)
προσηνής, ευπροσήγορος, αγανόφρων.
[ΕΤΥΜΟΛΟΓΙΑ < αἰνὸς + -φρων < φρὴν].