histrionicism means the histrionic art; stageplaying.
Etymology
From histrionic + -ism.
noun
- The histrionic art; stageplaying.“On the one hand, he considered it almost impossible for a woman to be so disingenuous; on the other hand, how could this girl have taught herself, in the solitude of a savage island, a species of histrionicism which women in London circles strove for years to acquire, and rarely acquired in any perfection?”