οἴμοι (oimoi)

exclamation of pain, fright, pity, anger, grief, also of surprise, properly οἴ μοι ah me! woe's me! (Theognis Elegiacus);—;with genitive causae, οἴμοι τῶν κακῶν, οἴμοι γέλωτος ah me for my misfortunes, for the laughter, [variant datesTragica Adespota
The last syllable in οἴμοι may be elided before ὡς. (ML)