Even before Donald Trump became a candidate for president, he was involved in a public feud with actress and former talk show host Rosie O'Donnell. While Trump is typically the one to hit back on Twitter, it was O'Donnell who decided to offer her thoughts on the social media platform.

Rosie speaks

The war of words between Donald Trump and Rosie O'Donnell made its way into the political arena last year during the first Republican primary debate. After moderator Megyn Kelly accused Trump of referring to many women as "fat pigs" and "dogs," the former host of "The Apprentice" replied, "only Rosie O'Donnell." The feud gained more steam when O'Donnell came under fire following the election when she questioned whether or not Trump's son, Baron Trump, had autism.

As seen on her official Twitter account on January 2, the former co-host of "The View" is still voicing her opinion.

"DONALD TRUMP IS MENTALLY UNSTABLE," Rosie O'Donnell tweeted out in all caps, before adding, "LESS THAN 3 WEEKS TO STOP HIM AMERICA." After several retweets that were also critical of the billionare real estate mogul, O'Donnell posted an article from Buzzfeed that highlighted Trump's controversial comments about women in the past, while adding her own comment, "DT IS MENTALLY ILL."

Rosie O'Donnell didn't stop, concluding her anti-Trump tweets, as of press time, with a final message.

In a third and final message on Twitter, O'Donnell posted another article about the president-elect, this time from the Huffington Post, while captioning it with her comment reading, "THE IS THE WORLDS WORST HUMAN."

Moving forward

While it's unknown what Rosie O'Donnell meant by stopping Donald Trump over the next three weeks, it's clear that the feud between the two is alive and well.

Trump is now just three weeks away from becoming the 45th President of the United States, which will occur on Inauguration Day on January 20. While Trump and his supporters will be enjoying the move into the White House, O'Donnell and many others are expected to continue their opposition, with as many as 100,000 protesters showing up to take to the streets.