certify

英['sɜːtɪfaɪ] 美['sɝtə'fai]

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"

"This decision demonstrates his sense of fairness"

2. guarantee payment on; of checks

3. authorize officially;

"I am licensed to practice law in this state"

4. guarantee as meeting a certain standard;

"certified grade AAA meat"

5. declare legally insane