nou ‧ veau riche /ˌnuːvəʊ ˈriːʃ $ -voʊ-/ BrE AmE adjective
[ Date: 1800-1900 ; Language: French ; Origin: 'new rich' ]
having only recently become rich and spending a lot of money – used to show disapproval SYN new rich
—nouveaux riches noun [plural]