Mariah Carey slammed “American Idol” on Australia's Kyle and Jackie O radio show on Wednesday and called it the “worst experience" of her life. The renowned singer, who was one of the judges in Season 12 of the reality singing show, has declined to return for the Season 15 series finale reunion.

The latest season, which will be the show's last, will feature Ryan Seacrest as host, and Harry Connick Jr., Keith Urban and Jennifer Lopez as judges. When asked about her willingness to appear for the season finale episode, Carey said, according to the Hollywood Reporter: "Hell no! Absolutely not. That was the worst experience of my life.

"I’m not going to get into what it was, but let’s just say I don’t think they had any intentions for us to have a good experience doing that show," Carey reportedly said on the show.

"It should have been about the contestants instead of about some nonexistent feud that turned into even more ridiculousness," Carey said, referring to her allegedly strained relationship with Nicki Minaj, who was one of the judges during Season 12.

“Pitting two females against each other wasn't cool,” Carey said, according to Entertainment Weekly, adding: "I would never want to be involved with it again. But everybody else did like it."

Carey also reportedly said that the time that she spent being a judge on the show was “boring.”

"It’s so boring and so fake, I’m sorry. When I say it’s fake, I mean, I have to make up things to say about everybody. Half the time, the performances are good, you’ll just be like, ‘It was good.'"

Clashes between Carey and Minaj became the talking points of Season 12, and the latter took to Twitter in May 2013 to retort to Carey's on-show dig about having more Billboard number ones.

“Bwaha! Burn? She's sad i tied her record for Hot 100 entries in only 3 years of being in the game. Yep, a black female rapper,” Minaj said, in the tweets, adding: “What u SHOULD be doing (wit your messy ass) is asking why a woman SO successful at her age, is still so INSECURE, and bitter.”

Minaj also picked on the fact that the producers of the show replaced Carey with Jenifer Lopez. “All dem #1s but JLo phone ringin? Lol. I guess having a personality, being a secure woman, and giving genuine critique still trumps that,” Minaj said, in the tweets, according to Daily Mail.