riche [disapproving] - typical of or being a person from a low social class who has recently become very rich and likes to show how rich they are by living in a big house, driving an expensive car, spending a lot of money, etc.Don't you think having lions on pillars at the side of your gate is rather nouveau riche?The nouveau riche are nouveau riche people.
NOUVEAU
Meaning of NOUVEAU in English
Cambridge English vocab. Кембриджский английский словарь. 2012