"[He] talks about and treats women like they're pieces of meat [and] lies constantly about matters big and small", he said.
In the interview on "20/20", Comey said Trump is "morally unfit" to serve as president.
Comey, who was sacked in May 2017 by Deputy Attorney General Rod Rosenstein before Trump later took credit for the dismissal, said there are already positives coming out of the problems he perceives. "And the question is, how much stain is too much stain". He went so far as to suggest that the truth of the salacious tale about Trump and prostitutes in Moscow is beside the point. And he had given these notebooks to this person who had neither a need to know, nor the appropriate clearance. They should also listen to him when he says disliking the president and disagreeing with his voters does not a case for impeachment make. "A man's man would just go back and listen and say, "This is wrong what happened here" or memorialize it in a proper document", he said, adding "you have these awesome men and women in the Federal Bureau of Investigation, if you really believe something is going on then sick them on him".
Former FBI special agent and 25-year veteran Jack Garcia was particularly scathing after Comey's interview.
Comey said he is anxious about no longer "tethering our leaders to that truth". "If he didn't know he was doing something improper, why did he kick out the attorney general and the vice president of the United States and the leaders of the intelligence community?" I mean, I only worked with him very briefly before I was sacked. You can't be kicked out of the room so he can talk to me alone.
Comey told ABC News that he believes there is "certainly some evidence of obstruction of justice". "And so I choose to see the opportunity in a forest fire because what forest fires do is allow things to grow that never could've grown". Classified at the top level in the government, including conversations with President Obama about special access programs, some of our- our most closely guarded secrets. "So what kind of marriage to what kind of man does your wife think there's only a 99 percent chance you didn't do that?" said Comey. "As far as I know, everybody does what they do for money. I don't think so".
The interview prompted immediate reactions from Republican leadership.
Comey is a self-admitted leaker.
In his interview, Comey defended the 28 October letter announcing the reopening of the investigation, which Clinton has said lost her the election to Trump. "He has no credibility and President Trump was right to follow through on the bipartisan calls for him to be fired".
In true Trump fashion, the president punched back hard on Twitter unleashing a rare double tweet.calling Comey "a weak and untruthful slime ball". On Friday, White House press secretary Sarah Sanders said that Comey "will be forever known as a disgraced partisan hack".
But Comey made it clear just how little he thinks of the Commander in Chief in his Sunday night sit-down with ABC News, his first major interview since being fired last May.
"It is stunning and I wish I wasn't saying it", Comey replied, "but it's just the truth".