Civil Court has never been so uncivilized.

George Soros’ Brazilian bombshell girlfriend screamed and clawed her way to legal defeat Thursday, as a judge tossed out her $50 million lawsuit against the lefty billionaire because she went berserk in court.

In a dramatic outburst, fiery soap-opera actress Adriana Ferreyr lunged at her ex-boyfriend’s lawyer during a Manhattan court hearing and angrily snatched away legal papers while yelling.

“She grabbed the whole folder from Andrew very aggressively,” said a witness of lawyer Andrew Brettler, who said that Ferreyr grabbed the sleeve of his suit during the fracas.

The tirade — which was only the latest wild fit thrown by Ferreyr — was the last straw for Manhattan Supreme Court Justice Debra James. “The judge said, ‘That’s it. Case dismissed. Your behavior is contemptuous,’” said a source.

Ferreyr had been representing herself in the suit, which she filed in 2011, claiming that Soros had roughed her up and given a $2 million apartment he promised her to his ex-wife.

Shortly before the alleged outburst, the judge had convinced Ferreyr to get over a major sticking point in the case by signing medical release forms related to injuries she allegedly sustained from Soros.

But at the last minute, Ferreyr changed her mind and reached over to the defense table to snatch the paperwork back.

“She got angry,” the source said. “At one point she blurted out, ‘They’re going to get the information and reveal it to the press to embarrass me.’”

Ferreyr admitted being “upset” during the proceeding but says she didn’t interrupt the judge or grab Brettler. She said she merely reached across the table to retrieve the documents when she realized she had signed a piece of paper unrelated to her case.

The final fracas came after a deposition one year ago, in which Ferreyr, 31, whacked the now-84-year-old Soros in the head and then knocked the glasses off the face of his attorney Martin Singer.

Ferreyr pledged Thursday to hire a new attorney and refile the case.