Anadiplosis

Anadiplosis is when you repeat a word or words at the end of a sentence or phrase in the beginning of the next sentence or phrase. It's like saying the same thing twice. For example, this sentence is an example of anadiplosis: "He didn't give up; he fought on and on." Here, "on" is the word that is repeated at the end of the first phrase and the beginning of the second phrase.