1. elegant or luxuriously appointed; expensive and fashionable
Usage: chiefly British
2. typical of or belonging to the upper class; snobbish
Usage: chiefly British; sometimes derogatory

Examples

• They stayed at a posh hotel in London.
• She spoke with a posh accent.
• The restaurant was too posh for our budget.
• He went to a posh private school.
• The posh neighborhood had expensive boutiques.
• Her posh mannerisms made others uncomfortable.