1. 证明者：attestation 证明 | attestator 证明者 | attestor 证人
2. 证明者, 证人：attestative || 证明(性质)的证据(性质)的证词(性质)的 | attestator || 证明者, 证人 | attested copy || 证明副本
noun
1. (law) a person who attests to the genuineness of a document or signature by adding their own signature