Here are some example sentences:
* "The restaurant had a faux-posh ambiance with velvet curtains and a chandelier that looked like it came from a discount store."
* "Her faux-posh accent and over-the-top jewelry made her seem more ridiculous than stylish."
* "The movie's dialogue was full of faux-posh pronouncements that sounded like they were ripped straight out of a bad romance novel."
The word "faux" comes from French and means "false" or "artificial." It is often used to describe things that are imitation or pretend.