1. 
2. 
[syn: inappropriateness, unworthiness]
The Collaborative International Dictionary of English v.0.48:
Unworthy \Un*wor"thy\, a.
   Not worthy; wanting merit, value, or fitness; undeserving;
   worthless; unbecoming; -- often with of. -- Un*wor"thi*ly,
   adv. -- Un*wor"thi*ness, n.
   [1913 Webster]
WordNet (r) 3.0 (2006):
unworthiness
    n 1: the quality or state of lacking merit or value [ant:
         worthiness]
    2: the quality of being not particularly suitable or befitting;
       "he retracted nothing that he had said about the
       inappropriateness of either a corporeal God or a God who is a
       person"; "his praise released from her loud protestations of
       her unworthiness" [syn: inappropriateness, unworthiness]
       [ant: appropriateness]