Definitions for "Peripeteia"
In the Anglicized form, "peripety"; the reversal of the protagonist's fortunes that, according to Aristotle, is part of the climax of a tragedy.
When a deed or action backfires or has a reverse effect. (see also Ironic deeds or situations, SG 157).
a sudden and unexpected change of fortune or reverse of circumstances (especially in a literary work); "a peripeteia swiftly turns a routine sequence of events into a story worth telling"