substantiate Synonyms

actualize support sustain incarnate realize embody realise corroborate confirm body forth affirm underpin attest to undergird testify show to be true externalise supporting supported substantialize strengthen show revendicate uphold validate verify exteriorise double-check exteriorize bear out back up actualise materialise account for get behind vouch vindicate vindicated warrant reinforce ratify establish endorse document determine demonstrate defend corroborating confirming circumstantiate