**confirm**： if a piece of new information confirms an idea or belief that people already have, it shows that it is definitely true: Police have found new evidence that confirms his story. | The discovery seems to confirm that people lived here over 10,000 years ago. **prove**： to show that something is definitely true by providing facts: DNA tests proved that he was the father of the child. | I think we’ve proved that we are a good team. **back up**： to provide additional information to help prove that a statement, belief, or explanation is correct: When you write a history essay, you should back up all your points with facts. | Wright was accused of pretending to be injured, and this was backed up by video evidence. **support**： to help to prove that a belief, idea etc is probably true: Do you have any evidence to support these claims? | The notion that women are worse drivers than men is simply not supported by the facts.    **substantiate**： （formal） to provide additional information that helps to prove that a statement is correct, especially if the statement is difficult to believe: A police investigation failed to substantiate the claim that he had been sexually abused. **validate**： (formal) to prove that information or results are correct by using scientific tests or very careful checking – used in scientific or technical contexts: All the information used in this report has been validated by an independent panel of experts.

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作者: 一些关于和“证”字相关的词，证明，证实，佐证等等