from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A person who has recently attained high position or great power but not general acceptance or respect; an upstart.
- n. A social climber; a bounder.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. upstart, newcomer, late arrival, nouveau riche, parvenu, generally characterised as an ambitious, brash or arrogant person who has yet to integrate with his or her new social group.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class
French, from arriver, to arrive, from Old French ariver; see arrive.(American Heritage® Dictionary of the English Language, Fourth Edition)
French arriviste. (Wiktionary)