1. (noun) confirmation, verification, check, substantiation
additional proof that something that was believed (some fact or hypothesis or theory) is correct
Synonyms: impediment, baulk, cheque, stay, confirmation, bridle, tick, hitch, proof, chip, handicap, assay, ratification, balk, check, check-out procedure, bank check, stoppage, tab, chit, curb, halt, deterrent, check mark, hinderance, hindrance, substantiation, stop, arrest, verification, checkout, validation
2. (noun) validation, proof, substantiation
the act of validating; finding or testing the truth of something
Synonyms: establishment, confirmation, verification, validation, proof, cogent evidence, trial impression, substantiation, test copy, check
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Synonyms for substantiation 
