τὸ κοῖλον τοῦ ποδὸς δεῖξαι → show the heels, show a clean pair of heels, show the hollow of the foot, run away
laetans (gen.), laetantis ADJ :: rejoicing
laetans: antis, Part. and P. a., from laetor.
lætāns,¹⁵ tis, p.-adj. de lætor, joyeux : Cic. Clu. 28 || riant, agréable : Lucr. 2, 344.