substantiate
verbUK /səbˈstænʃieɪt/
US /səbˈstænʃieɪt/
To show that something is true by giving proof.
The scientist used experiments to substantiate her claim.
RELATED WORDS
OTHER MEANINGS
2. To give real or concrete form to something, such as an idea or plan.
The team substantiated their vision by building a working prototype.
3. To make something stronger or more solid in structure.
The engineers substantiated the bridge with extra steel beams.
4. To establish something legally or officially with evidence.
The lawyer could not substantiate the accusation in court.