Voters didn’t hold back when describing Donald Trump in a national poll about Republican candidates released Wednesday. Trump topped the Suffolk University/USA Today poll, but 10 percent of likely Republican voters called the real estate magnate and 2016 presidential candidate an “idiot,” a “jerk,” “stupid” or “dumb.”

Six percent of all likely voters surveyed said they would describe Trump as “arrogant,” and another 6 percent” said he was “crazy” or “nuts.” Five percent called him a “buffoon,” a “clown,” “comical” or a “joke,” while 4 percent said he was “egotistical,” a “narcissist” or “selfish.”

Poll respondents had slightly nicer things to say about Trump’s GOP opponent, Carly Fiorina. About 10 percent called the former Hewlett-Packard CEO “smart,” “intelligent,” or “knowledgeable,” while 6 percent said she was “dishonest,” “untrustworthy” or a “liar.” The voters surveyed were not asked to describe other Republican candidates for the poll, which was conducted between Sept. 24-28 via telephone.

But the kinder words didn’t help Fiorina when likely voters picked their first choice to win the Republican nomination. Trump led fellow GOP challengers with 23 percent, followed by Fiorina and Ben Carson at 13 percent each, according to the poll, which surveyed 380 likely Republican primary voters with an overall margin of error of plus or minus 5 percentage points.

Donald Trump According to a Federal Election Commission report filed Thursday, Donald Trump received 72 percent of his campaign cash from donations of $200 or less. Pictured: The Republican presidential candidate is shown leaving a campaign event, Sept. 23, 2015, in Columbia, South Carolina. Photo: Sean Rayford/Getty Images

The Suffolk University/USA Today poll results showed Trump was up 6 points from the July survey as he strengthens his lead as the Republican front-runner, whether or not voters had nice things to say. Still, Trump has been a provocative figure in the 2016 presidential race since declaring his candidacy in June. The billionaire businessman has made controversial remarks about Mexican immigrants and women.

Most recently, Trump said his nomination for treasury secretary would be Carl Icahn, one of the world’s richest men, who has been called “a ruthless corporate raider” among other things, according to the Washington Post. Icahn accepted the tentative nomination and said electing Trump as president would be a “no-brainer” for American voters.

"I think he has a chance. He's sending a message to the middle class," he told CNBC Wednesday. "I don't know why you wouldn't vote for someone with that message."