substantiate

Rather, their standard of proof was “reasonable grounds,” and where they couldn’t directly substantiate allegations themselves, they looked for reasonable grounds to believe they were true.

The commission notes that Israel “did not provide evidence to substantiate that claim.”

After reading Babb’s novel, some Steinbeck scholars, like Michael J. Meyer, began to substantiate the merit of the claims that Steinbeck had appropriated Babb’s material.

From the start, Kirkpatrick says, he was determined to conduct a rigorously empirical inquiry: “We were looking for any data to substantiate any claims that were being made to Congress or in the social media arena.”

It went on to warn him that there was “a risk that these sources will have provided Panorama with documents that will enable them to substantiate these allegations”.