Source : Webster's Revised Unabridged Dictionary (1913)

Snobbishness \Snob"bish*ness\, n.
   Vulgar affectation or ostentation; mean admiration of mean
   things; conduct or manners of a snob.

Source : WordNet®

snobbishness
     n : the trait of condescending to those of lower social status
         [syn: {snobbery}]