What does "shiftless" mean?

Shiftless: Destitute of expedients, or not using successful expedients; characterized by failure, especially by failure to provide for one's own support, through negligence or incapacity; hence, lazy; improvident; thriftless; as, a shiftless fellow; shiftless management. -- Shift"less*ly, adv. -- Shift"less*ness, n.