Meaning & Definition of Attest 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. Authenticate, affirm to be true, genuine, or correct, as in an official capacity

• "I attest this signature"

3. Give testimony in a court of law

4. Establish or verify the usage of

• "This word is not attested until 1993"