At a news conference Saturday, Jessica Drake accused Trump of grabbing and kissing her without permission and offering her money to go up to his hotel room alone a decade ago.
In an appearance on WGIR radio's "New Hampshire Today," Trump called the accusations against him "total fiction."
"These are stories that are made up, these are total fiction. You'll find out that, in the years to come, these women that stood up, it was all fiction," he said. "They were made up. I don't know these women, it's not my thing to do what they say. You know I don't do that. I don't grab them, as they say, on the arm."
"One said, 'he grabbed me on the arm.' And she's a porn star. You know, this one that came out recently, 'he grabbed me and he grabbed me on the arm.' Oh, I'm sure she's never been grabbed before," Trump said.
"It's all lies, it's all lies, it was made up," added Trump. "It's like dripping water."
Drake, who is being represented by attorney Gloria Allred, is one of several women who have accused Trump of unwanted sexual advances in recent weeks. Trump has denied all the allegations against him and CNN has not independently verified their claims.
In the interview, Trump called Allred "a third rate lawyer" who supported Clinton.
Allred responded in a statement on Tuesday, calling on Trump to "put up or shut up."
"I say to Mr. Trump, put up or shut up," she said. "I challenge you to produce the hundreds of non-existent letters which you allege were sent. You will not be able to do it. There are no such letters to your employees or to Miss Universe contestants. I have been honored by President Reagan at the White House, and the National Trial Lawyers honored me with their lifetime achievement award. You are nothing but a fourth rate politician and a fifth rate human being who is losing this election and lashing out at the women who accuse you. You are attempting to bash me, because I represent three of the accusers. Also, I do not work for the Clinton campaign. I work only for my clients."
"Please understand that you will not intimidate me. Others who are smarter, richer and more famous than you are have tried and failed," Allred concluded.