ἰΰ
From LSJ
ὡς αἰεὶ τὸν ὁμοῖον ἄγει θεὸς ὡς τὸν ὁμοῖον → how God ever brings like men together | birds of a feather flock together | how the god always leads like to like | as ever, god brings like and like together | as always the god brings like to like
English (LSJ)
exclam. of surprise, Hdn.Gr.1.506.
Greek (Liddell-Scott)
ἰΰ: θαυμαστικὸν ἐπιφώνημα, Θεογνώστ. Κανόνες 161, Ἰω. Ἀλεξ. τονικὰ παραγγέλματα 37.