Pushing back against a forthcoming tell-all book by Omarosa Manigault-Newman, became a Washington, D.C. parlor game on Friday as her publicist began to parcel out excerpts to hungry news outlets.

In some cases the author hasn't helped her cause.

In 'Unhinged,' available to the public next Tuesday, Omarosa promotes unproven reports that outtake-tapes exist of the then-future president using the n-word 'several times' on the set of 'The Apprentice.'

She writes that three people had told her they were aware of the existence of the recording.

But on Friday afternoon she told NPR that she herself heard the racial slur on tape, and challenged a reporter who challenged her on the discrepancy to read her words more closely.

'I heard the tape,' Omarosa said in the radio interview.

But the book describes her learning about it on the phone from a person she doesn't name: 'On this phone conversation, I was told exactly what Donald Trump said – yes, the N-word and others in a classic Trump-goes-nuclear rant – and when he'd said them.'

'For over a year I'd been so afraid of hearing the specifics from someone who'd been in the room,' Omarosa writes. 'Hearing the truth freed me from that fear. And only now that it's gone, do I realize just how heavy it's been.'

Noted pollster Frank Luntz on debunked a passage where Omarosa claims she was told he had personally heard the rumored Trump 'n-word' audio.

Omarosa Manigault-Newman's new book is full of broadsides against Donald Trump, including some that the White House and others are already calling untrue – like the claim that a tape exists of Trump using the 'n-word' to refer to African-Americans

Omarosa contradicted herself Friday in an NPR interview, claiming that she had personally heard the rumored recording of Trump using the racial slur; in the book, she writes that other people hed merely told her about the audio

Famed pollster Frank Luntz clobbered Omarosa for printing, without contacting him, an anonymous source's claim that he had once heard Donald Trump use the 'n-word'

'I’m in @Omarosa’s book on page 149. She claims to have heard from someone who heard from me that I heard Trump use the N-word,' Luntz wrote. 'Not only is this flat-out false (I’ve never heard such a thing), but Omarosa didn’t even make an effort to call or email me to verify. Very shoddy work.'

Luntz continued: 'It seems like certain book publishers these days care more about getting a release out than getting the facts down. This is why people don’t trust these “exposés,” which is especially bad for authors who actually are good and reliable.'

Instead of telling the truth about all the good President Trump and his administration are doing to make America safe and prosperous, this book is riddled with lies and false accusations. It’s sad that a disgruntled former White House employee is trying to profit off these false attacks, and even worse that the media would now give her a platform, after not taking her seriously when she had only positive things to say about the President during her time in the administration. – White House Press Secretary Sarah Huckabee Sanders

The White House fired a missile in her direction on Friday following reporters that the book would accuse the president of uttering 'several' racial slurs.

'Instead of telling the truth about all the good President Trump and his administration are doing to make America safe and prosperous, this book is riddled with lies and false accusations,' White House Press Secretary Sarah Sanders said in a statement to reporters, throwing an unmistakably sharp elbow.

'It’s sad that a disgruntled former White House employee is trying to profit off these false attacks, and even worse that the media would now give her a platform, after not taking her seriously when she had only positive things to say about the President during her time in the administration.'

Omarosa, who launched her famous-for-being-famous career on the strength of her pugnacious persona on 'The Apprentice,' became an outspoken Trump critic only after she left her spokeswoman job at the White House's Office of Public Liaison and began to shop for a book deal.

Because she has told contradictory stories about her knowledge of Trump's purported racial slurs, it's unclear whether she has knowledge of them at all.

She also writes that she personally witnessed the president using a pair of racial insults against senior aide Kellyanne Conway's half-Filipino husband George.

'Would you look at this George Conway article?' she quotes Trump as saying, according to The Guardian. 'F***ing FLIP! Disloyal! F***ing Goo-goo.'

George Conway dismissed the story as 'absurd.'

White House Press Secretary Sarah Sanders took time away from vacation to say the book is 'riddled with lies' and Omarosa is 'disgruntled'

Omarosa made more pedestrian recordings of Trump on her own while she worked in the West Wing, but insists the white-whale tape is out there somewhere

Omarosa is launching a book tour, saying that she heard Trump denigrate Kellyanne Conway's half-Filipino husband (back row, right) with a racial slur

Mr. Conway immediately dismissed the racial-slur story as 'not credible' and 'absurd' on Thursday, noting that Omarosa was fired in December 2017, long before he became known as a persistent Trump critic

'The allegation is not credible, and indeed is ridiculous, particularly in light of the timing of her departure from the White House—December 12, 2017. It’s absurd all around,' he tweeted.

It wasn't until months later that he emerged as a steadfast and reliable Trump critic on Twitter despite his wife's loyalty and devotion to the president.

It's unclear what if anything might have set Trump off, but one of Mr. Conway's earlier rhetorical slaps may provide a suggestion.

Omarosa is the latest former Trump aide to land a book deal, and it promises to be both juicy and controversial

In a June 2017 tweet the Yale Law School grad berated the president for defending his travel ban, and said it would make it harder for the Office of Solicitor General to find 5 Supreme Court justices to green-light it.

'These tweets may make some ppl feel better,' he wrote, 'but they certainly won't help OSG get 5 votes in SCOTUS, which is what actually matters. Sad.'

A year later the high court did side with Trump on the divisive issue, by a 5-4 margin.

Omarosa's spicy memoir includes other less incendiary but equally too-good-to-check anecdotes.

One is the charge that a tanning bed occupies space in the presidential residence at 1600 Pennsylvania Avenue, and that President Trump caused a stink when he demanded one.

The Washington Post reported Friday that Omarosa wrote about how Trump fought over a tanning appliance with Angella Reid, then the White House's 'chief usher' – a title held by the chief of the household staff.

Reid was dismissed in early May 2017, narrowing the timeframe in which the story could have unfolded.

NOPE: White House officials are disputing Omarosa's claim that the president fought with White House ushers to install a tanning bed in the presidential residence

Omarosa claims Lara Trump, the wife of Eric Trump, offered her a $15,000 per month campaign job after she left the White House, a position that she says came with an onerous nondisclosure agreement

But a former White House official employed in the West Wing during those months told DailyMail.com on Friday that 'it never happened.'

'Are you kidding me?' asked one former aide who worked alongside Omarosa. 'If that were true, he would have tweeted about it by now and challenged Putin to get one.'

The source, who requested anonymity in order to speak freely, called the outspoken former colleague 'Ponderosa,' a derisive combination of her name and the word 'ponderous.'

Separately, a current senior White House official told a 'New York' magazine reporter that 'there is no tanning bed in there,' and there has 'never been any request' for one.

Among the odder claims in 'Unhinged' is Omarosa's insistence that presidential daughter-in-law Lara Trump offered her a $15,000-per-month campaign job when she left the White House, along with an agreement not to talk publicly about Trump.

Omarosa describes that as a bid to silence her, but presidential campaign jobs typically come with such strings attached.

And she says she once saw the president chewing up a piece of paper after a meeting with lawyer Michael Cohen.

George Conway may have set Trump off with tweets like this on in June 2017, in which he berated the president for defending his travel ban and said it would make it harder for the Office of Solicitor General to find 5 Supreme Court justices to green-light it

The Conways are pictured during an October 30, 2017 Halloween event at the White House

'I saw him put a note in his mouth. Since Trump was ever the germaphobe, I was shocked he appeared to be chewing and swallowing the paper. It must have been something very, very sensitive,' she writes in an excert given to The Washington Post.

As with many of her more pointed stories, White House aides flatly dnied it to the Post.

Omarosa's unceremonious December 2017 firing will be a telling asterisk as she launches a media tour this weekend with an interview on the set of 'Meet the Press.'

White House Chief of Staff John Kelly threw her overboard after he learned she was using the White House's car service – meant for the use of outside VIP guests – as a personal pick-up and drop-off chauffeur for her daily commute.

She claims in her book that she was shown the door because senior aides believed she was close to getting her hands on an 'n-word' recording – even though her employment status would be of little consequence if she had found one.

According to Omarosa, she was contacted during the 2016 campaign by a source who claimed to have the recording.

'By that point, three sources in three separate conversations had described the contents of this tape,' she writes. 'They all told me that President Trump hadn’t just dropped a single N-word bomb. He’d said it multiple times throughout the show’s taping during off-camera outtakes, particularly during the first season of The Apprentice.'

In the book Omarosa describes how she and Ivanka Trump tried to rid the White House of leakers

Trump has been flattering of the former 'Apprentice' star in the past, while acknowledging her tough reputation

She herself appeared in that season but doesn't claim to have heard it.

'I need to hear it for myself,' Trump aide Hope Hicks said when she raised the issue, in Omarosa's telling, asking her over and over for progress updates. The white-whale recording never materialized.

'I was told exactly what Donald Trump said – yes, the N-word and others in a classic Trump-goes-nuclear rant – and when he’s said them. During production he was miked, and there is definitely an audio track,' she writes now.

Rumors of a buried Trump 'n-word' recording predate his 2015 entry into presidential politics, and his case won't be helped by the infamous 'Access Hollywood' tape of him bragging that famous men like him can easily take sexual liberties with unwilling women.

Omarosa's personal smartphone recordings of Trump feature ordinary chatter, suggesting that she didn't witness him saying anything at 1600 Pennsylvania Avenue that was explosive or damning enough to make news.

But the tell-all book will infuriate the president, who reacted with anger when it was revealed his former personal attorney Michael Cohen recorded some of their conversations.

Omarosa describes an attempt by herself and Ivanka Trump to rid the White House of leakers. Short-lived White House communications director Anthony Scaramucci led the effort.

'Along with his comms directorship, Scaramucci had a secondary job. He was apparently the hired hit man,' Manigault writes, according to the Daily Beast.

'Very low-key, Ivanka [Trump] went around to the original Trumpers, the loyal soldiers, and asked the team to compile a list of suspected leakers. I'd already said my piece about [deputy chief of staff] Katie Walsh directly to Donald, and she'd been let go. But Ivanka wanted a new list and, once she had it, she would give it to Scaramucci, so he could fire them all. The final list that was texted to me on July 22 had ten names on it.'

She lists those staff as: Vanessa Morrone, Lindsay Walters, Janet Montesi, Raj Shah, Kelly Sadler, Lara Barger, Ory Rinat, Kate Karnes, Michael Short, and Jessica Ditto.

A White House official with knowledge of situation alleged in comments to DailyMail.com that since Scaramucci needed to come up with a list of names, he arbitrarily chose staffers – no matter their seniority or access – who had worked at the Republican National Committee.

Not all of them were RNC alumni, however, including Ditto.

Scaramucci was fired after 11 days.

Trump has been flattering of Omarosa in the past, while acknowledging her tough reputation.

'Honest Omarosa: she won't backstab-she'll come at you from the front,' he tweeted on March 10, 2013.

And he wrote a few days earlier on March 3: 'I'll always like @Omarosa because she constantly defends me.'

Finally, on March 3 he wrote: 'Are people really afraid of @Omarosa. Would you be?'

In an exclusive excerpt obtained by DailyMail.com, Omarosa, 44, tells of the dread she felt while watching Trump's May 2017 interview with Lester Holt.

'While watching the interview I realized that something real and serious was going on in Donald's brain. His mental decline could not be denied,' she writes.

'Many didn't notice it as keenly as I did because I knew him way back when. They thought Trump was being Trump, off the cuff. But I knew something wasn't right.'

'For the Lester Holt interview, I watched it on a small TV in the upper press room (the lower press room was built on top of the old swimming pool and turned into the briefing room) by the press secretary's office,' she writes.

'Throughout this erratic and contradictory interview, I kept thinking, 'Oh no! Oh no! This is bad!

'Donald rambled. He spoke gibberish. He contradicted himself from one sentence to the next.'