1. [ adjective ] serving to support or corroborate
Synonyms: confirmative confirming confirmatory corroborative corroboratory substantiating substantiative validatory verificatory verifying collateral

"collateral evidence"

Related terms: supportive
2. [ noun ] the act of validating; finding or testing the truth of something
Synonyms: validation substantiation proving proof
Related terms: determination documentation monetization probate authentication confirm
Similar spelling:   validation