parvenu
noun /ˈpɑːvənjuː/
/ˈpɑːrvənuː/
(plural parvenus)
(formal, disapproving)- a person from a low social or economic position who has suddenly become rich or powerful
暴发户；新贵 词源early 19th cent.: from French, literally ‘arrived’, past participle of parvenir, from Latin pervenire ‘come to, reach’.