From Wiktionary, the free dictionary
אוֹי (óy, “oh!”) + וְ־ (v', “and”) + אֲבוֹי (avóy, “alas!”)
אוֹי וַאֲבוֹי • (óy va'avóy)
- Oh no!
- Woe is me!
- an interjectional phrase used as a warning
אם אתה עושה את זה, אוי ואבוי לך!- If you do that, watch out you'll be in trouble!