hutzpa

from 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]
    

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