Akademik

confirmatory
adjective
serving to support or corroborate
-

collateral evidence

Syn:
collateral, ↑confirmative, ↑confirming, ↑corroborative, ↑corroboratory, ↑substantiating, ↑substantiative, ↑validating, ↑validatory, ↑verificatory, ↑verifying
Similar to: ↑supportive
Derivationally related forms:
verify (for: ↑verificatory), ↑validate (for: ↑validatory), ↑substantiate (for: ↑substantiative), ↑corroborate (for: ↑corroboratory), ↑corroborate (for: ↑corroborative), ↑confirm, ↑confirm (for: ↑confirmative), ↑collateral (for: ↑collateral)

Useful english dictionary. 2012.