NICKI MINAJ CUSSES OUT MARIAH CAREY



Nicki Minaj derailed the "American Idol" auditions in Charlotte, North Carolina today, after swearing at Mariah Carey and threatening, "I'm gonna knock you out" ... sources tell TMZ.

In the footage, obtained by TMZ, Nicki is clearly furious ... shouting, "I told them, I'm not f*ckin' putting up with her f*ckin' highness over there."

Sources say Nicki later threatened to "knock out" Mariah ... but that part wasn't captured on tape.

tmz