histrionicism en · NOUN
Etymology
From histrionic + -ism.
Meanings
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(uncountable) 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?
1874, William Black, A Princess of Thule: