noun
a usually crude and pushing person who has recently reached a position of prominence, power, or wealth
declared the new executive an upstart lacking all breeding and culture
Synonyms: arriviste, nouveau riche, parvenu, roturier
Related Word: bounder, cad, outsider; guttersnipe, mucker, slob, vulgarian; boor, lout, roughneck, rowdy; comer; social climber