WATCH: Katherine Heigl Gets Real About Rude-Girl Rumors on “Meredith Vieira Show”

Old reputations die hard, and Katherine Heigl is more ready than ever these days to put her bad rap to bed.

During an interview for "The Meredith Vieira Show," airing Monday, the "State of Affairs" star was asked about the recent Facebook Q&A she did, during which a fan asked her thoughts regarding rumors that she is "very rude." Part of Heigl's response was, "I don't think I am."

Well, she has since shored up her response to that persistent question that's been hounding her since her days on "Grey's Anatomy."

"What I loved about the Facebook Q&A is that I could take my time and I realized that I like to talk a lot and I will type out the longest lengthiest answers, so I only answered 10 questions in two hours," Heigl recalled, "but I think I said, 'Of course, I've heard that too and I'm not.' And you know what, I've been saying 'I don't think I am,' but I'm going to be really honest right now.

"I'm not."

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"I know I'm not," she continued. "I don't have to think about it. I'm not a rude person. I'm not an unkind or mean person. I would never go out of my way or consciously try to hurt anyone's feelings or make them feel bad or uncomfortable or not be...professional...

"I like my job. I will continue to stand up for myself and I'm never going to stop standing up for my right to be heard, my right to be treated respectfully and professionally in return, my right to draw boundaries. I am a strong woman and I'm not going to apologize for that and I'm not going to on behalf of my daughters--and I'm not going to on behalf of all of you sitting in the audience.

"We should all have the basic human right to say, 'Hey, no, I'm sorry, I'm not comfortable with that. I don't like that. This is not OK for me,' without it making me...I can't say the word. A B-word."

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Meanwhile, the 35-year-old mother of two and Vieira did delve into lighter topics as well, including an interesting story about the role John Mayer played in her eventual marriage to singer-songwriter Josh Kelley.

It turns out she met both musicians at around the same time, and while she and Kelley pursued a romance, she and Mayer became good friends.

"So, we were just hanging out a little bit but I completely used John to get Josh to commit," Heigl admitted. "Because these musicians, they are competitive and jealous of each other. Whatever, over the phone, because he was on tour, I was like, 'Josh, I've got to be honest. I just want to know where we stand because if not, I might try to pursue something with John.'"

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