WATCH: Trump does not mince words when reporter asks about Omarosa's new tell-all book

President Donald Trump gave a succinct response on Saturday to a reporter who asked about former White House aide Omarosa Manigault Newman, whose unreleased book is causing shockwaves in Washington.

Newman's book, "Unhinged: An Insider's Account of the Trump White House," which is set to release Tuesday, has already caused quite a stir over the numerous accusations she lobs at the man she worked so closely with for more than a decade.

One of Newman's more noteworthy allegations is that Trump is "a racist, a bigot and a misogynist" whose mental stability is in "decline." Many of the accusations have already received heavy backlash.

What did Trump say on Saturday?

During an event in Bedminster, New Jersey, on Saturday, where Trump was meeting and interacting with bikers who support him, New York Times reporter Maggie Haberman asked for his reaction to Newman's book.

"Mr President, do you feel betrayed by Omarosa, sir?" Haberman asked.

"Lowlife, she's a lowlife," Trump responded before exiting a platform where he had been asking the bikers for their thoughts on the media.

The remark is Trump's first public denouncement of Newman's bombshell book.

In addition to Newman's claims that Trump is a racist and a bigot, Newman claims that first lady Melania Trump will divorce her husband when his presidency ends and that she was offered "hush money" to stay mum about her time in the White House.