Simple past tense and past participle of rebut.(verb)
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Use "rebutted" in a sentence
"He was the one that made the argument which you then promptly shredded and then he "rebutted" with something that only underscored just how utterly incompetent he was to discuss this topic in the first place."
"Argentine Foreign Minister Hector Timerman quickly rebutted Mr. Valenzuela and called on the U.S. to apologize for violating Argentine law."
"Furthermore, no one has rebutted the arguments that torture damages our reputation, making it harder to win “hearts and minds”, or that torture not only has no benefits in interrogation but also actively compromises the person being question such that further information out of him is less reliable that it would have been absent the torture."