• Webster's Revised Unabridged Dictionary
    • interj Lackaday Alack the day; alas; -- an expression of sorrow, regret, dissatisfaction, or surprise.
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Century Dictionary and Cyclopedia
    • lackaday An exclamation of sorrow or regret; alas! alas the day! Also lawka-day.
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Webster's Revised Unabridged Dictionary
Abbreviated from alackaday,


In literature:

Lackaday, I am old bones for such freaks.
"Henry Brocken" by Walter J. de la Mare
Dame Ursula's babe, that was christened Lionel, the day Lord Lackaday became king!
"Fifty-Two Stories For Girls" by Various