The Collaborative International Dictionary of English v.0.48:

chutzpa \chutzpa\, chutzpah \chutzpah\n. [Yiddish khutzpa.]
   aggressive boldness or unmitigated effrontery; gall; as, he
   had the chutzpah to question my decision. [Also spelled
   hutzpa, and hutzpah.]

   Syn: audacity, audaciousness.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

chutzpah
    n 1: (Yiddish) unbelievable gall; insolence; audacity [syn:
         chutzpa, chutzpah, hutzpah]

Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "chutzpah":
   backbone, bottom, brashness, brass, brazen boldness, cheek, crust,
   face, gall, grit, guts, gutsiness, guttiness, heart, heart of oak,
   heroics, hubris, improvidence, imprudence, impudence, indiscretion,
   injudiciousness, insolence, intestinal fortitude, mettle, nerve,
   overboldness, overcarelessness, overconfidence, oversureness,
   overweeningness, pith, pluck, rashness, spirit, spunk, stamina,
   stout heart, temerariousness, temerity, toughness, unchariness,
   unwariness