Her portrayal of a historical figure in the film was widely praised for its depth and accuracy.

portrayal 是动词 portray（描绘、刻画）的名词形式，由 portray 加上名词后缀 -al 构成。portrayal 指"描绘、刻画、表现"的方式或结果，在这里特指演员对历史人物的演绎。