snob

Short definition from Wiktionary

Noun

1. 1
   A person who wishes to be seen as a member of the upper classes and who looks down on those perceived to have inferior or unrefined tastes.
2. 2
   A cobbler or shoemaker.
3. 3
   A member of the lower classes; a commoner.
4. 4
   A workman who works for lower wages than his fellows, especially one who will not join a strike (a scab).
5. 5
   A townsman, as opposed to a gownsman.