Definition of Substantiate

to prove the truth of something

Examples of Substantiate in a sentence

To get a good grade on the research project, you must substantiate your report with provable facts.  

How do you plan to substantiate your right to inherit the billionaire’s fortune?  

Even though the defendant could not substantiate his alibi for the night of the murder, he was still found innocent of all charges.  

The nosey old lady was unable to substantiate the allegation her neighbors were drug dealers.  

If you do not substantiate your scientific theories with facts, the members of the scientific community will disregard all your ideas.  

The reporter could not publish his article because he was unable to substantiate the stories of his confidential source.  

Since Jason did not take a picture of the spaceship, he cannot substantiate his claim of a UFO sighting.  

The teacher insisted her students substantiate their thesis statements with historical facts.  

Although Maria claims to be in love with Henry, she will not substantiate her feelings by accepting his marriage proposal.  

If Larry cannot substantiate his identity at the airport, he will not be allowed to board the airplane.  

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