WASHINGTON — Former White House press secretary Sean Spicer pushed back on Omarosa Manigault Newman’s allegation that he was paid to say nice things about President Trump in his new book.

“There’s no evidence of anything of the sort,” Spicer told The Post. “What’s equally disappointing to me is not only did Chuck Todd give Omarosa a platform, but he failed to challenge her in the most basic ways.”

Manigault Newman sat down with Todd for an exclusive interview on “Meet the Press” as part of the rollout of her new book, “Unhinged,” which documents her time in the Trump White House.

The book comes out Tuesday.

After getting axed from her White House post, she said, she got a job offer from Trump’s re-election campaign, which came with a caveat: She would have to sign a non-disclosure agreement that included a “no disparagement” clause.

“They were not offering me a real job. They told me I could work from home, if I even wanted to work. They didn’t really care if I showed up,” she said. “In fact, there are several former employees from the White House who actually signed this agreement, who are all being paid $15,000 for their silence.”

Todd followed up by asking if she thought former White House staffers were being “bought off.”

“Absolutely. The campaign, the RNC, and America First, which is why Sean Spicer was describing Donald Trump as a ‘unicorn jumping over rainbows,’” Manigault Newman said, referencing a description of the president found in Spicer’s book. “Because he signed this same agreement.”

Spicer, whose book “The Briefing: Politics, the Press and the President” came out last month, said that was not the case.

“I did not sign an NDA like that,” he told The Post.

Spicer pointed to his own timeline to explain why the allegation makes no sense.

The former press secretary said he signed a book deal in December 2017 and had no affiliation with the Trump Organization or any Trump apparatus while writing the tome.

He had also started using the Trump “unicorn” reference in speeches last fall, several months after leaving his White House post.

Spicer did join America First, a pro-Trump political action committee, in June, after the book was already submitted.

For that job, Spicer signed a standard employment agreement.

“The facts say completely the opposite,” he said. “That’s literally the timeline.”

But Kellyanne Conway, a top Trump adviser, acknowledged that the Trump White House uses NDAs routinely.

“We have confidentiality agreements in the West Wing, absolutely we do,” Conway said on ABC’s “This Week.” “And why wouldn’t we?”

She went on to say that Manigault Newman signed one when she was on “The Apprentice,” and “certainly at the campaign. We’ve all signed them in the West Wing.”