English English Dictionary

confirm something by providing evidence in English:

Prosecutors in court have to substantiate their claims in order to prove a suspect is guilty.

His claims have never been substantiated.

In order to win the trial, we had to substantiate the charges with very powerful evidence

I am going to substantiate this theory.

You'd better think it over how you are going to substantiate your claim.

I’ll do it – if I can just substantiate your story with the police.

Weight of evidence is needed to substantiate a health effect for probiotics