[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:attest, manifest, demonstrate, evidence
[verb] guarantee payment on; of checks
[verb] authorize officially; "I am licensed to practice law in this state" Synonyms:license, licence
[verb] guarantee as meeting a certain standard; "certified grade AAA meat" Synonyms:endorse, indorse