Roseanne Barr broke down in tears during an interview as she apologised for her racist tweet.

Roseanne Barr

Roseanne Barr

The 65-year-old TV star had her sitcom cancelled last month after she likened Valerie Jarrett, a former adviser of Barack Obama, to an ape, but in interview for Rabbi Shmuley Boteach's podcast, Roseanne has insisted she now deeply regrets her mistake.

She explained: "I'm a lot of things. I'm a loudmouth and all that stuff, but I'm not stupid, for God's sake, and I never would have wittingly called a black person ... say they are a monkey. I never would do that! And I didn't do that.

"I am so sorry, that I was so unclear and stupid. I'm very sorry but I don't think that, I never would do that."

The veteran star subsequently admitted she's "lost everything" after her show was cancelled by ABC.

However, Roseanne claimed she's willing to accept whatever consequences come her way over the next few months and years.

She said: "I don't excuse it. I horribly regret it. I've lost everything. I regretted it before I lost everything and I said to God, 'I am willing to accept whatever consequences this brings because I know I've done wrong.' I'm willing to accept what the consequences are. And, I do. And I have."

Roseanne also revealed she's tried to reach out to Jarrett in an effort to make a personal apology.

She shared: "I went to her Twitter page and I said 'Please forgive me. I have done something horrible and I apologise to you, and I ask for your forgiveness.'

"And you know, I tried to get her phone number because even though I don't agree with her, even when we really disagree with someone because they're hurting us and our families - we still have to treat them with human dignity. And that's what I wanted to apologise to her for. Because you know, even though I didn't have that in my head it came out that way."