ὠκύπους
From LSJ
ὅρκους γυναικὸς εἰς ὕδωρ γράφω → the oaths of a woman I inscribe on water, I write a woman's oaths in water
English (LSJ)
ὁ, ἡ, πουν, τό: acc. masc.
A ὠκύπουν E.Hel.243 (lyr.): Ep. dat. pl. -πόδεσσι Il.2.383, etc.:—swift-footed, in Hom. always epith. of horses, Il. l. c., al., and so in Pi.Parth.2.44; of the hare, Hes.Sc.302; ἔλαφοι S.OC1093 (lyr.); ἱππικῶν . . ὠκύπους ἀγών Id.El.699; κύνες E.Hipp.1129 (lyr.); of Hermes, Id.Hel. l.c.