parvenu

A person who has suddenly risen to a higher social and economic class and has not yet gained social acceptance by others in that class.

One newly risen into notice, especially by an accident of fortune and beyond his birth or apparent deserts, whether as a claimant for a place in society or as occupying a position of authority; an upstart.

Like or characteristic of a parvenu or upstart.

An upstart; a man newly risen into notice.

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.

this sense?) Being a parvenu; also, like or having the characteristics of a parvenu.

a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class

characteristic of someone who has risen economically or socially but lacks the social skills appropriate for this new position

of or characteristic of a parvenu