Meaning & Definition of Substantiate in English

1. Establish or strengthen as with new evidence or facts

• "His story confirmed my doubts"

• "The evidence supports the defendant"

2. Represent in bodily form

• "He embodies all that is evil wrong with the system"

• "The painting substantiates the feelings of the artist"

3. Make real or concrete

• Give reality or substance to

• "Our ideas must be substantiated into actions"

4. Solidify, firm, or strengthen

• "The president's trip will substantiate good relations with the former enemy country"