nouveau riche means "newly rich" in french. One who has recently become rich, especially one who flaunts newly acquired wealth. nouveau riche is a term.
Noun, 1. nouveau - riche - a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class. arriviste.
Americans love a good rags-to- riches fairytale, but here's a story people are far more interested in reading: Riches -to-rags. Take Business.