Found 2 items, similar to corroborative.
English → English (WordNet) Definition: corroborative corroborative adj : serving to support or corroborate; “collateral evidence” [syn: collateral, confirmative, confirming, confirmatory, corroboratory, substantiating, substantiative, validating, validatory, verificatory, verifying]
English → English (gcide) Definition: Corroborative Corroborative \Cor*rob"o*ra*tive\ (k?r-r?b"?-r?-t?v), a. [Cf. F. corroboratif.] Tending to strengthen of confirm. [1913 Webster] Corroborative \Cor*rob"o*ra*tive\, n. A medicine that strengthens; a corroborant. --Wiseman. [1913 Webster]