Dr. Jordan B. Peterson, who has two children, threatened Wednesday to sue a Bloomsburg University of Pennsylvania professor who called him an incel and a white nationalist.

The University of Toronto professor and author of “12 Rules for Life: An Antidote to Chaos” threatened to sue Bloomsburg professor Wendy Lynne Lee after she called him an “incel misogynist” and “committed white nationalist,” reported Mic.

An incel, or involuntary celibate, is shorthand for a man who can’t attract women as sexual partners and checks out of the dating scene. News outlets popularized the term “incel” after the April Toronto massacre by Alek Minassian, who identified with the group. (RELATED: Investigation Continues Into Tragic Toronto Van Attack)

Lee deleted her tweet shortly before The Daily Caller News Foundation published a Wednesday article but not before TheDCNF captured a screenshot of it.

“Please immediately retract all of your defamatory statements, have them immediately removed from the internet, and issue an apology in the same forum to Mr. Peterson,” Peterson’s attorney Howard Levitt said in an email to Lee obtained by Mic. Lewitt threatened to take legal action if the professor did not comply.

The Bloomsburg professor had not substantiated her claims that Peterson, who has a wife and two children, is an incel, nor that the professor, who has stated his opposition to identity politics, is a white nationalist. (RELATED: Pro-Flag-Burning Prof Calls Child-Having Jordan Peterson A ‘White Nationalist’ ‘Incel’)

“AS PER THREAT TO SUE FOR LIBEL, I HEREBY APOLOGIZE TO JORDAN PETERSON FOR REFERRING TO HIM AS AN INVOLUNTARY CELIBATE (INCEL), A MISOGYNIST, A COMMITTED WHITE NATIONALIST, AND SOMEONE WHO HAS DESCENDED INTO RANK BIGOTRY,” Lee subsequently posted to Twitter.

“That’s some apology,” Peterson noted to TheDCNF.

“I find it absurd,” Lee, who has authored “Contemporary Feminist Theory and Activism: Six Global Issues,” told Mic. “Many have actually said these things about Peterson and at much greater length. You can find similar language in several articles.”

But Levitt alleged that Lee’s stature as a professor with a Ph.D. means her claims bear more weight than do accusations made by other individuals.

“She’s a college professor,” the attorney told Mic. “She has a Ph.D. She knows what she’s doing. Yet this woman said Dr. Peterson is a white supremacist. If a professor at a university makes such a claim, people might actually believe it.”

Lee maintains a bibliography of “white nationalist sources,” in which she includes Peterson, Jewish conservative figures Ben Shapiro, David Horowitz, Jewish podcast host Dave Rubin, and right-wing author Ann Coulter.

She has also hung an upside down American flag in her office window, as well as signs saying “Biggest s***hole in the world is Donald Trump’s racist soul.”

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