Rosie O'Donnell Calls Donald Trump a 'Criminal,' 'Mentally Unstable' in Twitter Rant

Trump has yet to respond to O'Donnell directly, but he did send a message to his 'many enemies' in a New Year's tweet.

Rosie O'Donnell isn't pleased with Donald Trump.

The 54-year-old actress, who has a long-running feud with Trump, took to Twitter on Sunday to slam the President-elect, calling him "mentally unstable" and a "criminal."

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"DONALD TRUMP IS MENTALLY UNSTABLE," she tweeted alongside a CNN interview with Trump biographer Harry Hurt III, who claimed the businessman kicked him off the golf course at Trump International Golf Club in West Palm Beach, Florida, last week because wasn't happy with Hurt's book. "LESS THAN 3 WEEKS TO STOP HIM AMERICA."

"TRUMP IS A CRIMINAL," she wrote in another tweet, this time linking to an article analyzing Trump's claims about saving American jobs.

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While Trump has yet to respond to O'Donnell, he addressed his "many enemies" in a New Year's tweet.

"Happy New Year to all, including to my many enemies and those who have fought me and lost so badly they just don't know what to do. Love!" he wrote on Saturday.

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While O'Donnell clearly isn't a fan of Trump, the former View co-host opened up about a pleasant meeting with his daughter, Ivanka, in October. 

"@IvankaTrump, in a city of eight million, we meet face-to-face," she wrote on Twitter. "I thank you for listening, mother to mother, on this New Year's week. My best to you."

See more about the pair's chance meeting in the video below.