"I wanted to throw her off the set," Williams later told The Associated Press.
The altercation started when Omarosa Manigault-Stallworth first walked onto the daytime talk show and said she was displeased with Williams' introduction of her and would not be disrespected. Things got uglier when Williams grabbed Omarosa's book cover to hold it up to the camera, and Omarosa snatched it back out of Williams' hand.
"Omarosa wished her career was my career," Williams told the AP. "Omarosa is a delusional, D-list, pathetic woman."
The yanking gave way to Omarosa attacking Williams' appearance, asking the talk show host whether she had had a nose job and suggesting she shouldn't wear wigs.
But Williams didn't stay silent throughout the heated interview.
She called Omarosa "a typical angry black woman" and suggested cosmetic injections could fix her wrinkles.
Will there be a rematch?
"I have no reason to invite Omarosa back to the show," said Williams. "That's done. She had her moment."
Omarosa was a contestant on the first "Apprentice" with Donald Trump in 2004. Her domineering personality quickly earned her enemies among fellow contestants and TV viewers.