The Collaborative International Dictionary of English v.0.48:

Gaucherie \Gauche`rie"\, n. [F.]
   An awkward action; clumsiness; boorishness.
   [1913 Webster]

WordNet (r) 3.0 (2006):

gaucherie
    n 1: the quality of being rustic or gauche [syn: rusticity,
         gaucherie] [ant: urbanity]
    2: a socially awkward or tactless act [syn: faux pas, gaffe,
       solecism, slip, gaucherie]

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "gaucherie":
   bad job, bevue, blunder, bobble, boggle, bonehead play, boner,
   boo-boo, botch, bungle, clumsy performance, error, etourderie,
   flub, fluff, foozle, fumble, hash, mess, miscue, mistake, muff,
   off day, sad work, slip, stumble, trip