Meaning & Definition of Certify in English

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