posher

/P AA1 SH ER0/
adjective
  1. 1

    Associated with the upper classes.

    โ€œShe talks with a posh accent.โ€

  2. 2

    Stylish, elegant, exclusive (expensive).

    โ€œAfter the performance they went out to a very posh restaurant.โ€

  3. 3

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

    โ€œWe have a right posh git moving in next doorโ€

Source: https://en.wiktionary.org/wiki/posh, https://en.wiktionary.org/wiki/posher