Parvenu

Noun

 * 1) A person who has risen, climbed up, or has been promoted to a higher social class, especially through acquisition of wealth, rights, or political authority but has not gained social acceptance by those within that new class.

Related terms

 * nouveau riche

Adjective

 * 1) Being a parvenu; also, like or having the characteristics of a parvenu.

Thesaurus
adventurer, arriviste, billionaire, bloated plutocrat, boor, bounder, bourgeois, bourgeois gentilhomme, bright young man, cad, capitalist, churl, clown, comer, emigrant, epicier, fat cat, fledgling, gate-crasher, greenhorn, groundling, guttersnipe, hooligan, ill-bred fellow, immigrant, intruder, intrusive, looby, lout, low fellow, man of means, man of substance, man of wealth, millionaire, modern, modern generation, modern man, modernist, modernizer, moneybags, moneyed man, mucker, multimillionaire, mushroom, nabob, name-dropper, neologism, neologist, neology, neonate, neoteric, neoterism, neoterist, new arrival, new boy, new generation, new man, newcomer, newly-rich, nouveau riche, nouveau roturier, nouveau-riche, novus homo, parvenue, peasant, pig in clover, plutocrat, recruit, ribald, rich man, richling, rising generation, rookie, roturier, rough, roughneck, rowdy, ruffian, settler, social climber, sprout, squatter, status seeker, stowaway, stripling, tenderfoot, tufthunter, upstart, vulgarian, vulgarist, warm man, wealthy man, would-be gentleman, yokel