Manigault Newman had said in the book that she had not personally heard the recording.
The name-calling came in response to a question about a series of explosive claims in Manigault Newman's forthcoming book about her time in the Trump administration.
"I had a blind spot where it came to Donald Trump", she said.
"This book is riddled with lies and false accusations", White House press secretary Sarah Huckabee Sanders has said, in part, about the book.
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Little did she know that she would become a likely candidate for that list after losing her position at The White House. USA Today reports that Donald Trump has called his former Director of African American Outreach, a "low life".
Manigault Newman, who was in charge of Trump's black outreach, also recounts instances that made her re-think her loyalties to the President and the administration, particularly in the wake of the white supremacist rally in Charlottesville in August 2017.
But Manigault Newman now says she was "used" by Trump for years, calling him a "con" who "has been masquerading as someone who is actually open to engaging with diverse communities" and is "truly a racist". Trump replied, according to her account. She also described him as a man who "loved conflict, chaos and confusion; he loved seeing people argue or fight".
Trump has retweeted white nationalist material, said Mexicans crossing the USA border are rapists and drug dealers, once referred to a Hispanic Miss Universe as "Miss Housekeeping" and employed Steve Bannon, a central figure of the new "alt-right" in America, as his campaign chief and top strategist for a time.
The offer of money and a job in exchange for signing a non-disclosure agreement, however, raised Manigault Newman's hackles. "I felt myself being manipulated, but refused to allow that to happen".