The Collaborative International Dictionary of English v.0.48:

Luckless \Luck"less\, a.
   Being without luck; unpropitious; unfortunate; unlucky;
   meeting with ill success or bad fortune; as, a luckless
   gamester; a luckless maid.
   [1913 Webster]

         Prayers made and granted in a luckless hour. --Dryden.
   -- Luck"less*ly, adv. -- Lock"less*ness, n.
   [1913 Webster]