Khiasma

Khiasma is a term originating from Greek, meaning "chiasmus." It refers to a rhetorical device in which two clauses or phrases are reversed or crossed in parallel order. The structure typically follows an ABBA pattern, where the first part of the first clause is echoed in the second part of the second clause, and the second part of the first clause is echoed in the first part of the second clause. For example, "Ask not what your country can do for you, ask what you can do for your country" is a classic instance of khiasma. The first clause presents "country" and "you," while the second clause reverses this order to "you" and "country."

This literary device is employed to create emphasis, add elegance, and make a statement more memorable. It can highlight a contrast or a connection between two ideas. Khiasma can be found in various forms of literature, speeches, and everyday language. Its effectiveness lies in its symmetrical structure, which draws attention to the relationship between the parallel elements. While sometimes appearing complex, the underlying principle is a reversal of grammatical elements for rhetorical impact. The term itself underscores the crossing or intertwining nature of the mirrored phrases.