parvenu
🇺🇸
/ˈpɑːrvənuː/
🇬🇧
/ˈpɑːvənjuː/
a person who has recently become successful or important, often seen as lacking in social graces
The new parvenu in town was quick to flaunt his wealth at every opportunity.
城裡新來的暴發戶總是隨時炫耀他的財富。