Posher

adjective

1. Associated with the upper classes.

   "She talks with a posh accent."

2. Stylish, elegant, exclusive (expensive).

   "After the performance they went out to a very posh restaurant."

3. (usually offensive) Snobbish, materialistic, prejudiced, under the illusion that one is better than everyone else.

   "We have a right posh git moving in next door"