certify

verb

1. 1

   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

2. 2

   declare legally insane

3. 3

   guarantee payment on; of checks

4. 4

   authorize officially

   I am licensed to practice law in this state

5. 5

   guarantee as meeting a certain standard

   certified grade AAA meat