Repetition in a poem refers to the intentional use of the same word, phrase, line, or stanza multiple times throughout the poem. This literary device serves various purposes, such as emphasizing a particular idea or theme, creating rhythm and musicality, enhancing the emotional effect, or contributing to the poem's overall structure. Common forms of repetition include anaphora (repeating a word or phrase at the beginning of successive lines) and epiphora (repeating at the end of successive lines).
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