Chip Somodevilla/Getty Images
Elizabeth Warren.
The Massachusetts senator slammed Trump in a series of tweets, repeatedly calling him a "loser" while dismissing his "scam" businesses.
"Let's be honest - @realDonaldTrump is a loser. Count all his failed businesses. See how he cheated people w/ scams like Trump U," Warren said, referring to Trump University, the real-estate magnate's embattled for-profit college.
She posted a similar, longer message on Facebook as well.
View Warren's tweets below:
See how @realDonaldTrump kept his father's empire afloat using strategic corporate bankruptcies to skip out on debt.
- Elizabeth Warren (@elizabethforma) March 21, 2016Listen to experts who say @realDonaldTrump might have more money today if he'd put his inheritance in an index fund & left it alone.
- Elizabeth Warren (@elizabethforma) March 21, 2016.@RealDonaldTrump knows he's a loser. His insecurities are on parade: petty bullying, attacks on women, cheap racism, flagrant narcissism.
- Elizabeth Warren (@elizabethforma) March 21, 2016But Warren also warned of the danger of not taking Trump's candidacy seriously.
But just because @realDonaldTrump is a loser everywhere else doesn't mean he'll lose this election.
- Elizabeth Warren (@elizabethforma) March 21, 2016.@RealDonaldTrump stands ready to tear apart an America that was built on values like decency, community, and concern for our neighbors.
- Elizabeth Warren (@elizabethforma) March 21, 2016Many of history's worst authoritarians started out as losers - and @realDonaldTrump is a serious threat.
- Elizabeth Warren (@elizabethforma) March 21, 2016The way I see it, it's our job to make sure @realDonaldTrump ends this campaign every bit the loser that he started it.
- Elizabeth Warren (@elizabethforma) March 21, 2016