hamartian.

1789 T. Twining tr. Aristotle Treat. Poetry 308 Dacier confounds himself and his readers in his note about Thyestes. He mistakes Aristotle's sense of ἁμαρτια.

1895 S. H. Butcher Aristotle's Theory Poetry & Fine Art viii. 300 But with him [sc. Macbeth] the ἁμαρτία, the primal defect, is the taint of ambition.]

1927 F. L. Lucas Tragedy iv. 102 If we seek the hamartia in more modern tragedy like Ibsen's, it becomes clearer than ever that an intellectual mistake is all that the term need mean.

1956 H. House Aristotle's Poetics vi. 94 All serious modern Aristotelian scholarship agrees..that ‘hamartia’ means an error which is derived from ‘ignorance of some material fact or circumstance’.

1968 D. W. Lucas in Aristotle's Poetics 302 The essence of hamartia is ignorance combined with the absence of wicked intent.