成なり上あがり者もの

noun

upstart; parvenu; nouveau riche

A person who has suddenly risen to wealth or status, often with a negative connotation implying lack of refinement or social grace.

• 彼かれは成なり上あがり者ものだと陰かげで言いわれている。

  He is talked about behind his back as an upstart.

• 成なり上あがり者ものの彼かれは、急きゅうに態たい度どが大おおきくなった。

  As an upstart, he suddenly became arrogant.