Synonyms of 'nouveau riche'
The nouveau riche have to find a way of being accepted.
the gaudy mansions Shaw built for the nouveaux riches in the late 19th century
Copyright © 2016 by HarperCollins Publishers. All rights reserved.
You describe someone as an arriviste when you are criticizing them because they are trying very hard to belong to an influential or important social group which you feel they have no right to belong to.
a woman regarded by some as a pushy arriviste
If you describe someone as a parvenu, you think that although they have acquired wealth or high status they are not very cultured or well-educated.
the parvenu's snobbish desire to be linked with celebrities
Thesaurus for nouveau riche from the Collins English Thesaurus
The nouveaux riches are people who have only recently become rich and who have tastes and manners that some people consider vulgar .