[verb] provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes; "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sense of fairness" Synonyms:certify, manifest, demonstrate, evidence
[verb] authenticate, affirm to be true, genuine, or correct, as in an official capacity; "I attest this signature"
