nouveau riche
nounNAmE//ˌnuvoʊ ˈriʃ//
(pl. nouveaux riches NAmE//ˌnuvoʊ ˈriʃ//
or the nouveau riche) (from French) (disapproving)See nouveau riche in the Oxford Advanced Learner's Dictionary
Check pronunciation: nouveau riche
Definition of nouveau riche noun from the Oxford Advanced American Dictionary