taking no action as a means of response
Original Dramatica Definition
Inaction does not mean simply sitting still. The Inactive characteristic might choose to allow a course of action by not interfering. Or it might refuse to move out of harm's way, thereby forming a resistance to the progress that drives the harm. Both of these are efficient tools for altering the course of an interaction. However, the Inactive characteristic may also drag its feet in all areas and form a resistance to both good and bad things so that its influence simply hinders everything but changes nothing.
syn. passive reaction, inactive response, achieve through not doing