harping

His harping on this point could come across as doctrinaire.

You can lose your fan base who might be influenced by your work by harping on them too much.

Throughout the hearing, he kept harping on the word "anonymous," implying that the press made up the stories.

Believe me, I’m completely aware that I sound like a Scrooge, a buzzkill harping and carping about innocuous movies that are meant to be little more than background noise while people scroll on their phones.

Graham's harping on the anonymity of the allegations appears to be part of a GOP playbook around Hegseth.