corroboratory

from WordNet (r) 3.0 (2006)

corroboratory
    adj 1: serving to support or corroborate; "collateral evidence"
           [syn: {collateral}, {confirmative}, {confirming},
           {confirmatory}, {corroborative}, {corroboratory},
           {substantiating}, {substantiative}, {validating},
           {validatory}, {verificatory}, {verifying}]

from The Collaborative International Dictionary of English v.0.48

Corroboratory \Cor*rob"o*ra*to*ry\ (-t?-r?), a.
   Tending to strengthen; corroborative; as, corroboratory
   facts.
   [1913 Webster]

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