perseverate
/pərˈsɛvəˌreɪt/
verb
- To repeat something persistently, especially a word, phrase, or action, often in a way that seems excessive or uncontrollable.
- She couldn't stop perseverating about the mistake she made at work.
- The patient tends to perseverate, asking the same question over and over.
- After the accident, he would perseverate on the details of what happened.