nouveau riche /ˌnuːvoʊˈriːʃ/ noun plural nouveaux riches /ˌnuːvoʊˈriːʃ/ plural nouveaux riches /ˌnuːvoʊˈriːʃ/ Learner's definition of NOUVEAU RICHE
[count] disapproving
: a person who has recently become rich and who likes to spend a lot of money暴发户
— nouveau riche
adjective