Arriviste (noun)

A person who has recently achieved success or wealth but has not yet gained social acceptance.

Origin:

The word "arriviste" is a noun which means "a person who has recently achieved success or wealth but has not yet gained social acceptance" and it is derived from the french word "arriviste" which means "upstart".

Examples:

1. He was an arriviste who had worked hard to become successful.
2. She was an arriviste who had recently inherited a large fortune.
3. The party was full of arrivistes who were trying to impress the social elite.
4. He was an arriviste who had grown up in a poor family but had become a successful businessman.
5. The arriviste was not welcomed by the old-money crowd.