From Longman Dictionary of Contemporary Englishbe beyond disputebe beyond disputeCERTAINLY/DEFINITELYif something is beyond dispute, everyone agrees that it is true or that it really happened It is beyond dispute that advances in medicine have enabled people to live longer. → dispute
Examples from the Corpus
be beyond dispute• Ellen's honesty is beyond dispute.• Her professionalism is beyond dispute.• That the reports were stolen is beyond dispute. What we need to know is who took them.• That the Emperor did not want war is beyond dispute, for the evidence from all sides makes this clear.