A term coined by Aristotle to describe "some error or frailty" that brings about misfortune for a tragic hero. The concept of hamartia is closely related to that of the tragic flaw: both lead to the downfall of the protagonist in a tragedy. Hamartia may be interpreted as an internal weakness in a character (like greed or passion or hubris); however, it may also refer to a mistake that a character makes that is based not on a personal failure, but on circumstances outside the protagonist’s personality and control. See also tragedy.