substantiative(redirected from substantiatively)
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|Adj.||1.||substantiative - serving to support or corroborate; "collateral evidence"|
corroborative, corroboratory, substantiating, validating, validatory, verificatory, verifying, confirmative, confirmatory, confirming, collateral
supportive - furnishing support or assistance; "a supportive family network"; "his family was supportive of his attempts to be a writer"