Mr. DeGuerin, 75, who is married and has four daughters, said it was unusual for professional men of his and the 70-year-old Mr. Trump’s generation to talk in the way that Mr. Trump did about forcing himself upon women.

“It’s crude. And it’s not normal,” he said.

“If I caught someone talking about my daughter the way he was talking about these girls … I think I’d go to Fist City with him,” Mr. DeGuerin added.

Many of the other men drew a line at lewd descriptions of women and Mr. Trump’s boasts about unwanted touching.

“What’s unusual is not how he talked about women like they’re objects or conquests; we all know there are men who talk like that, even if it’s not most men,” said Michael Kimmel, a sociology professor at Stony Brook University who has written several books on men, sex and masculinity. “It’s his own behavior that he himself describes, and the confidence he has that he can act on it with impunity — that’s what’s rare.”

The other striking aspect, he said, is that Mr. Trump was 59 when the recording was made.

“This frat house stuff, Army stuff,” he said. “You might hear athletes and entertainers, these highly entitled people, talk like this, but most guys age out of it. The relationships they develop with real, live women mitigate against it.”

The Rev. Corey Brooks, an African-American pastor, is a rare Republican on Chicago’s South Side. He said he was leaning toward voting for Mr. Trump until he saw the video and his 26-year-old daughter confronted him about it.

“Now that he’s made those comments, it’s kind of the nail in the coffin for me,” said Mr. Brooks, 47. “To hear my daughter, who is not a politically savvy person, to say that she felt disrespected as a woman, I can only imagine how other women are feeling.”