Example : His story confirmed my doubts.
The evidence supports the defendant.

Synonyms : affirm, confirm, corroborate, support, sustain

Example : He embodies all that is evil wrong with the system.
The painting substantiates the feelings of the artist.

Synonyms : body forth, embody, incarnate

Example : Our ideas must be substantiated into actions.

Synonyms : actualise, actualize, realise, realize

Example : The president's trip will substantiate good relations with the former enemy country.