πρόδοσις
From LSJ
αἰθὴρ δ᾽ ἐλαφραῖς πτερύγων ῥιπαῖς ὑποσυρίζει (Aeschylus, Prometheus Bound 126) → The bright air fanned | whistles and shrills with rapid beat of wings.
English (LSJ)
εως, ἡ,
A payment beforehand, money advanced, Lys.Fr.1.3(pl.); δωρεαὶ καὶ προδόσεις D.50.7,12. 2 προδόσει πίνειν to drink on credit, Hermipp.83. II betrayal, treason, Pl.Lg.856e.