The Collaborative International Dictionary of English v.0.48:

Parsimony \Par"si*mo*ny\, n. [L. parsimonia, parcimonia; cf.
   parcere to spare, parsus sparing: cf. F. parcimonie.]
   Closeness or sparingness in the expenditure of money; --
   generally in a bad sense; excessive frugality; niggardliness.
   --Bacon.
   [1913 Webster]

         Awful parsimony presided generally at the table.
                                                  --Thackeray.
   [1913 Webster]

   Syn: Economy; frugality; illiberality; covetousness;
        closeness; stinginess. See Economy.
        [1913 Webster]

WordNet (r) 3.0 (2006):

parsimony
    n 1: extreme care in spending money; reluctance to spend money
         unnecessarily [syn: parsimony, parsimoniousness,
         thrift, penny-pinching]
    2: extreme stinginess [syn: meanness, minginess,
       niggardliness, niggardness, parsimony,
       parsimoniousness, tightness, tightfistedness,
       closeness]

Moby Thesaurus II by Grady Ward, 1.0:

52 Moby Thesaurus words for "parsimony":
   Lenten fare, austerity, austerity program, canniness, care,
   carefulness, chariness, economic planning, economicalness, economy,
   economy of means, exiguity, exiguousness, false economy,
   forehandedness, frugality, frugalness, good management, husbandry,
   jejuneness, jejunity, leanness, management, meagerness, meanness,
   miserliness, narrowness, niggardliness, paltriness,
   parsimoniousness, providence, prudence, prudential administration,
   puniness, scantiness, scantness, scrawniness, scrimpiness,
   skimpiness, slenderness, slightness, slim pickings, slimness,
   smallness, spareness, sparingness, stinginess, thinness, thrift,
   thriftiness, tight purse strings, unwastefulness