Which literary device would be best to create rhythm in a poem?

The best literary device to create rhythm in a poem is alliteration. Alliteration involves the repetition of initial consonant sounds in nearby words, which can enhance the musical quality of the language. This repetition can establish a pattern that contributes to the poem's rhythm, making it more engaging and memorable. By creating a sense of cohesion and flow, alliteration helps to establish a beat that can resonate with readers, drawing them into the poem's emotional and thematic depth.

While other devices also have their unique contributions to poetry, alliteration specifically targets sound repetition, making it particularly effective for establishing rhythmic structure. Metonymy refers to substituting one term with another related term, which does not inherently focus on rhythm. Hyperbole involves exaggerated statements not meant to be taken literally, serving more for emphasis or drama rather than rhythm. An antonym is a word that means the opposite of another, which does not directly relate to creating rhythm in poetry.