a person who has risen suddenly from a humble position to wealth, power, or a position of consequence.

a presumptuous and objectionable person who has so risen; parvenu.

being, resembling, or characteristic of an upstart.

to spring into existence or into view.

to start up; spring up, as to one's feet.

to cause to start up.

noun

name-dropper , nouveau riche , parvenue , social climber , status seeker , arriviste , comer , jackanapes , johnny-come-lately , mushroom , parvenu , presumptuous , snob