arriviste
/ˌɑːriˈviːst/
noun
- A person who has recently risen to a higher social or economic position and is often seen as ambitious, pushy, or lacking the manners of that class.
- The novel satirizes the arrivistes who flooded the neighborhood during the boom years.
- His flashy car and loud parties marked him as an arriviste trying too hard to fit in.
- The old-money families looked down on the arriviste who bought the mansion next door.