The phrase "indisputable evidence" means factual information or proof that is impossible to disagree with or argue against. It is strong and solid evidence that is beyond doubt or dispute. Full definition
Worst of all, this is all occurring with indisputable evidence of the causes, dangers, and solutions to climate change readily available. (strangeloopgames.com)
Propose a scientific law with indisputable evidence it doesn't. (religion.blogs.cnn.com)
Twin beds, a walk - in closet, and a spacious bathroom were what you might expect of any luxury accommodation, but a wide balcony overlooking the waves provided indisputable evidence that, yes, we were aboard a great ship. (moneysense.ca)