1. attest, certify, manifest, demonstrate, evidence, testify, bear witness, prove, evidence, show

usage: 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"

2. certify, secure

usage: guarantee payment on; of checks

3. license, licence, certify, authorize, authorise, pass, clear

usage: authorize officially; "I am licensed to practice law in this state"

4. certify, endorse, indorse, guarantee, warrant

usage: guarantee as meeting a certain standard; "certified grade AAA meat"

5. certify, declare, adjudge, hold

usage: declare legally insane

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See also: certify (Dictionary)