Hamartia (Ancient Greek: ἁμαρτία) is a term eveloped by Aristotle in his work Poetics. The term can simply be seen as a character’s flaw or error. The word hamartia is rooted in the notion of missing the mark (hamartanein) and covers a broad spectrum that includes accident and mistake, as well as wrongdoing, error, or sin.. In Nicomachean Ethics, hamartia is described by Aristotle as one of the three kinds of injuries that a person can commit against another person. Hamartia is an injury committed in ignorance (when the person affected or the results are not what the agent supposed they were).