1. 
[syn: worthlessness, ineptitude]
2.  the quality of being without practical use; 
The Collaborative International Dictionary of English v.0.48:
Worthless \Worth"less\, a. [AS. weor[eth]le['a]s.]
   Destitute of worth; having no value, virtue, excellence,
   dignity, or the like; undeserving; valueless; useless; vile;
   mean; as, a worthless garment; a worthless ship; a worthless
   man or woman; a worthless magistrate.
   [1913 Webster]
         'T is a worthless world to win or lose.  --Byron.
   [1913 Webster] -- Worth"less*ly, adv. -- Worth"less*ness,
   n.
   [1913 Webster]
WordNet (r) 3.0 (2006):
worthlessness
    n 1: having no qualities that would render it valuable or
         useful; "the drill sergeant's intent was to convince all
         the recruits of their worthlessness" [syn: worthlessness,
         ineptitude] [ant: worth]
    2: the quality of being without practical use