οἴ
From LSJ
ἅτε γὰρ ἐννάλιον πόνον ἐχοίσας βαθύν σκευᾶς ἑτέρας, ἀβάπτιστος εἶμι φελλὸς ὣς ὑπὲρ ἕρκος ἅλμας → for just as when the rest of the tackle labors in the depths of the sea, like a cork I shall go undipped over the surface of the brine | as when the other part of the tackle is laboring deep in the sea, I go unsoaked like a cork above the surface of the sea
English (LSJ)
exclam. of pain, grief, pity, astonishment,
A ah! woe! sts. with nom., οἲ' γώ S.Aj.803, El.674, 1115 : mostly c. dat. (cf. οἴμοι): c. acc., οἲ ἐμὲ δειλήν AP9.408 (Apollonid. or Antip.), cf. IG14.1971.5 : also οἰοῖ, οἰοιοῖ, A.D.Adv.177.4, cf. A.Eu.841, Supp.876, Pers.955 (all lyr.), etc. : Ion. ὀΐ as exclam. of fear, Ar.Pax933.