relentless

"As a serial entrepreneur, Musk has been relentless in trying to improve institutional efficiency at his own enterprises, most notably, Tesla and X," says Thomas Gift, a professor of US politics at University College London.

"I promise you, for the remainder of the next four years, I will only speak to you in this tone of voice, this close to the camera. I will be relentless."

They were relentless in their physicality, the game turning into a magnificent frenzy.

It hasn't happened once, or twice; it is relentless.

Just as months of relentless polling showed Harris in a virtual tie with Donald Trump, many of those same surveys told the story of a yawning gender gap.