A grammatical interruption or lack of implied sequence within a sentence.
That is, beginning a sentence in a way that implies a certain logical resolution, but concluding it differently than the grammar leads one to expect. Anacoluthon can be either a grammatical fault or a stylistic virtue, depending on its use. In either case, it is an interruption or a verbal lack of symmetry. Anacolouthon is characteristic of spoken language or interior thought, and thus suggests those domains when it occurs in writing. (Not to be confused with anacoloutha)