US President Donald Trump on Tuesday (Wednesday NZ Time) referred to Omarosa Manigault Newman as "that dog" as the former senior White House adviser continued a publicity tour to promote her new book depicting Trump as a racist.
Trump's former TV co-star on The Apprentice also said she has heard audio tape of the president using the N-word.
Omarosa also had a bridal "going away" party before her wedding with none other than aides close to the president.
The latest twitter outburst from the President came after Ms Manigault-Newman revealed she made secret recordings, which aired on August 13, on NBC's Today programme.
He tweeted: "I don't have that word in my vocabulary, and never have".
"His mental decline could not be denied", wrote Manigault Newman, who had been one of the Republican president's most prominent black supporters.
US President Donald Trump (centre) is flanked by White House staffer Omarosa Manigault Newman (left) and then-Housing and Urban Development Secretary-designate Ben Carson in February 2017.
Trump is known for making even low-level workers at the Trump Organization, his 2016 campaign, and his presidential transition agree to sweeping NDAs. But it's the one we get: the one to take hold of a weekend news cycle, to force a reexamination of the president's racist and dishonest tendencies, to have the nation on the edge of their seat as they ponder, What does she know?
Despite her assertion on the recording that Trump did use the racial epithet, Pierson said on Tuesday she does not believe that Trump used the N-word. One such agreement, between adult-film star Stormy Daniels and Trump's then-attorney Michael Cohen, is the subject of ongoing litigation by Daniels, who says she had an affair with Trump in 2006 and now wants to discuss the details of it.
Dozens of White House aides have signed NDAs in exchange for working for Trump, who has long relied on such agreements in his business career, according to current and former administration employees.
Security Experts, Trump Allies Alarmed By Omarosa Recordings
Omarosa claims to have multiple recordings of her time in the White House , but numerous claims she has made are unverifiable. And, he adds, she should have been more loyal to the president because " Donald Trump made her".
In audio of Omarosa's firing, Kelly wishes her a "friendly departure", adding that he hoped "you can go on without any difficulty in the future relative to your reputation".
"You know that it's a seven-minute interview", Manigault Newman scolded.
When she was a contestant on the reality television programme The Apprentice Mr Trump had what must now seem like the pleasure of firing her.
But the use of such agreements is seen as highly unusual by experts outside Trump's White House.
Manigault-Newman did note that her source for the tape was "terrified" to come forward, and teased they could be holding onto to it for "politically motivated" reasons ahead of the midterm elections. But Manigault-Newman says she was offered a salary for a "job" that required no work-only her signature on an NDA.
Manigault Newman said she turned it down.
The special counsel has not responded to an ABC News request for comment.
She added: 'Did she purposefully wear a Hillary Clinton-esque white pantsuit to Trump's first State of the Union address?
In a morning tweet, Trump praised his chief of staff, John Kelly, for firing Manigault Newman a year ago.