1. An exclamation expressing sorrow, regret, or dismay.
Usage: archaic; literary; variant spelling of 'alack-a-day'

Examples

• Alackaday, I have lost my way in the forest.
• Alackaday, what shall become of us now?
• The old woman cried out, 'Alackaday!' upon hearing the terrible news.
• Alackaday, those were the days of my youth, now long past.