When number of items are placed in succession of each other. It creates a sense of chaos, confusion, logic, or reason, depending on the context
EXAMPLE: The use of syndetic listing in “We had scones and muffins and jams and fruits and sandwiches and biscuits and teas and quiches and pastries and everything else that was required for the perfect traditional English high-tea” (lines 2-5) has an accumulative effect which creates a sense of abundance and indulgence.