Michelle Obama also says she was surprised that so many American women voted for the “misogynist” Trump over Hillary Clinton, “an exceptionally qualified female candidate,” in the 2016 election.

The book, “Becoming,” hits stores on Tuesday, and Obama does not mince words about her husband’s successor — and his involvement in promoting the idea that Barack Obama was born abroad.

“The whole [birther] thing was crazy and mean-spirited, of course, its underlying bigotry and xenophobia hardly concealed,” she writes, in excerpts of the book published by ABC News and The Washington Post.

“But it was also dangerous, deliberately meant to stir up the wingnuts and kooks,” she adds.

“What if someone with an unstable mind loaded a gun and drove to Washington? What if that person went looking for our girls?

“Donald Trump, with his loud and reckless innuendos, was putting my family’s safety at risk. And for this I’d never forgive him.”