"I appreciate Bill Clinton being my psychoanalyst. It's always nice," Sanders said on CNN’s State of the Union.
When asked about the former president’s suggestion that Sanders would not have said Hillary was "unqualified" if she were a man, Sanders muttered "oh my goodness" under his breath.
Sanders said that the Clinton campaign’s accusations of sexism are part of a larger strategy to present him in a negative light.
"I think the Clinton campaign has made it public. Basically they’ve told the media that here in New York, they’re about to become very negative, about to beat us up," Sanders said, insisting that he would not tolerate it. "We have tried to run an issue-oriented campaign, but … we are not going to be attacked every single day."
Sanders stood by his "doubts" about the former secretary of state and pointed to her record of voting for the Iraq war and supporting "disastrous" trade agreements.
"I have my doubts about what kind of president she would make," Sanders said.
Sanders has softened his claim that Clinton is not qualified to be president, saying that the former secretary of state "obviously" has the requisite experience to lead the country, but that her voting record and close ties to Wall Street show "bad judgment."
Hillary Clinton also accused Sanders of sexism in October, when the Vermont Senator, using an often repeated campaign phrase of his, said that "all the shouting in the world" would not lead to gun control.
"I haven’t been shouting, but sometimes when a woman speaks out, some people think it’s shouting," Clinton shot back days later.