成り上がり者
なりあがりもの upstart parvenu

成り上がる
なりあがる to rise (suddenly) in the world (to a higher position)

成り下がる
なりさがる to be degraded to come down in the world

成り代わる
なりかわる to do in place of or on behalf of (someone)

成り切る
なりきる to turn completely into to become completely

成り変わる
なりかわる to change to change into to become

成り果てる
なりはてる to be reduced to...

成り済まし
なりすまし a masquerade

成り済ます
なりすます to pose as to impersonate

成り立ち
なりたち the way in which something came about

成り立つ
なりたつ to consist of to be practical (logical, feasible, viable) to be concluded to hold true

成り行き
なりゆき outcome development course of events progress result

成り行き注文
なりゆきちゅうもん market order

成り角
なりかく promoted bishop

成り駒
なりこま promoted chessman