ἰεῦ
From LSJ
γραμματική ἐστιν ἐμπειρία τῶν παρὰ ποιηταῖς τε καὶ συγγραφεῦσιν ὡς ἐπὶ τὸ πολὺ λεγομένων → grammar is a practical knowledge of the usage of poets and writers of prose
English (LSJ)
an ironical exclamation,
A whew! Ar.V.1335.
German (Pape)
[Seite 1244] Interjection des Spottes, hui, Ar. Vesp. 1335.