harp on

But I don’t ever harp on things like that or watch people’s failures because I’ve had one.

“I said what I needed to say. I don’t think it’s something that I want to harp on,” he said.

"I'm the first to harp on about the wildcards. It's not just about one week or one match. It's about what you do 52 weeks of the year," Evans said after beating former US Open semi-finalist Tiafoe.

The former computer contractor for Jet Propulsion Laboratory tries not to harp on what would have happened if they’d kept sleeping.

“I’m not going to turn the page and forget about it. And I’m also not going to harp on this the rest of my life,” Fonti said.