The Collaborative International Dictionary of English v.0.48:
Snobbishness \Snob"bish*ness\, n. Vulgar affectation or ostentation; mean admiration of mean things; conduct or manners of a snob. [1913 Webster]WordNet (r) 3.0 (2006):
snobbishness n 1: the trait of condescending to those of lower social status [syn: snobbery, snobbism, snobbishness]