IPA: /θiˈætrɪkəlɪzəm/
KK: /θiˈætrɪkəlɪzəm/
A style or manner that is dramatic and showy, often used in performances or presentations.
The actor's performance was full of theatricalism, captivating the audience with every gesture.
The word 'theatricalism' is formed from 'theatrical' (from Greek 'theatron', meaning a place for viewing) and '-ism' (a suffix used to denote a practice or philosophy). The term refers to the practice or philosophy of theatrical performance or style.
Think of 'theatron', which means a place for viewing, and remember that 'theatricalism' relates to the practice of performance in that viewing space.