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What is another word for substantiate?

What's another word for substantiate? | Here's a list of synonyms for substantiate.

Definition 1: solidify, firm, or strengthen - [verb of change]

Definition 1: establish or strengthen as with new evidence or facts - [verb of cognition]

Definition 1: make real or concrete; give reality or substance to - [verb of creation]

Definition 1: represent in bodily form - [verb of stative]