nou·veau riche 
/ˌnu:voʊˈri:ʃ/ noun
plural nou·veaux riches /ˌnu:voʊˈri:ʃ/ noun /ˌnu:voʊˈri:ʃ/ [count] disapproving : a person who has recently become rich and who likes to spend a lot of money
— nouveau riche adjective
▪ Our nouveau riche neighbors just bought some expensive but tacky furniture.
▪ Our nouveau riche neighbors just bought some expensive but tacky furniture.
