polyptoton
/ˌpɒlɪptɒˈtɒn/Definitions
1. noun
The repetition of a word or its variants in a sentence or passage, often for emphasis or effect.
“The poet’s use of polyptoton created a powerful and memorable image in the reader’s mind.”
2. noun
A figure of speech in which a word or its variants is repeated for rhetorical effect.
“The orator’s polyptoton added depth and complexity to his argument.”