attestative
*/ˌætɛstəˈteɪtɪv/ or /ˌætɛstətɪv/ *
Definitions
1. adjective
Of or relating to a document or statement that confirms or gives evidence of something.
“The attestative value of the witness’s testimony was crucial in the trial.”
2. noun
A statement that confirms or gives evidence of something.
“The judge accepted the attestation as sufficient evidence.”