The Collaborative International Dictionary of English v.0.48:

Niggardness \Nig"gard*ness\, n.
   Niggardliness. --Sir P. Sidney.
   [1913 Webster]

WordNet (r) 3.0 (2006):

niggardness
    n 1: extreme stinginess [syn: meanness, minginess,
         niggardliness, niggardness, parsimony,
         parsimoniousness, tightness, tightfistedness,
         closeness]