a. 起确定作用的, 批准的

[法] 确实的, 证实的, 确定的

[ adj ]
serving to support or corroborate
<adj.all>
collateral evidence

Confirmative \Con*firm"a*tive\, a. [L. confirmativus: cf. F.
confirmatif.]
Tending to confirm or establish. --Sherwood. --
{Con*firm"a*tive*ly}, adv.