Donald Trump's chief strategist Stephen Bannon has called the president's senior advisor and son-in-law Jared Kushner a "cuck" and a "globalist" during a time of high tension between the two top aides, several Trump administration officials told The Daily Beast.

The fighting between Kushner and Bannon has been "nonstop" in recent weeks, according to sources who spoke on condition of anonymity. It's been an "open secret" that Bannon and Kushner often clash "face-to-face," according to senior officials.

One official said Bannon has lately complained about Kushner trying to "shiv him and push him out the door" and likened him to a fifth column in the White House.

"[Steve] recently vented to us about Jared being a 'globalist' and a 'cuck'…He actually said 'cuck,' as in "cuckservative,'" the administration official told The Daily Beast.