also nouveau-riche
(~, or nouveaux riches)
1.
The nouveaux riches are people who have only recently become rich and who have tastes and manners that some people consider vulgar.
The ~ have to find a way to be accepted...
N-PLURAL: usu the N disapproval
2.
Nouveau-riche means belonging or relating to the nouveaux riches.
...critics who did not appreciate his nouveau-riche taste.
ADJ disapproval