Repetition is a powerful literary device that is often used by writers and speakers to emphasize an idea, drive a point home, or create a sense of rhythm in their work. However, it is important to vary the use of repetition in order to prevent the repetition of the same words or phrases from becoming monotonous and uninteresting. Some synonyms for repetition include iteration, reiteration, recurrence, redundancy, duplication, and restatement. Each of these words has a slightly different nuance, but they all describe the act of repeating a word, phrase or idea in order to emphasize its importance and impact on the reader or listener.