What "peripeteia" means in tragedy

A term you'll meet in Greek tragedy and dramatic theory.

Peripeteia — Greek for "reversal" — is Aristotle's name for the moment a tragedy's fortunes turn. It is the structural hinge on which a tragic plot pivots, and Aristotle considered it, together with anagnorisis (recognition), the defining element of a properly constructed tragedy.

The definition in the Poetics

Aristotle defines peripeteia as a change in the direction of the action into its opposite. This is more specific than "things go badly." Peripeteia is the moment when the very effort the hero makes to achieve a goal produces the reverse of that goal.

The textbook example is again Oedipus Rex. The messenger arrives intending to cheer Oedipus up by revealing that Polybus, the king he believed was his father, is not his father. The news is meant to dissolve the prophecy. Instead, it sets in motion the chain of revelations that destroys Oedipus. The messenger's intention and his effect are exact opposites. That is peripeteia in its purest form.

Peripeteia and anagnorisis together

Aristotle considered the finest tragic structure one in which reversal and recognition coincide. The moment the character recognizes the truth (anagnorisis) is the moment their fortune turns (peripeteia). The two events share a single beat. This is why Oedipus Rex is, for Aristotle, the template — the shepherd scene performs both functions in one line. (See our entry on anagnorisis.)

Peripeteia vs. ordinary plot turns

Not every twist is a peripeteia. The distinguishing features:

It reverses an intention. The character is trying to do A; the action accomplishes the opposite of A.
It is internal to the plot. A peripeteia rises from the plot's own logic, not from an outside intervention. When an outside force resolves the situation, that's a deus ex machina — which Aristotle considered a fault.
It is necessary or probable. Once it happens, the audience should feel "of course." Peripeteia is the structural payoff, not a surprise for surprise's sake.

Famous examples beyond Greek tragedy

Macbeth. Macbeth murders Duncan to secure the throne and his own peace. The murder produces only further bloodshed and unrest — the reverse of his intention.
Crime and Punishment. Raskolnikov commits the murder to prove he is above ordinary morality. The act proves the opposite.
The Great Gatsby. Gatsby builds an empire to win Daisy. The empire is exactly what makes him unworthy in the eyes of her class.

How to read it

When a critic identifies a peripeteia, they are pointing at a moment of intentional irony in the plot's structure — the hero's action curving back on itself. Ask: what was the character trying to do? What did the action accomplish? When the two are mirror opposites, you have peripeteia. The deeper the inversion, the closer the play comes to Aristotle's ideal.

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