Definitions of attest:
- verb: authenticate, affirm to be true, genuine, or correct, as in an official capacity
Example: "I attest this signature"
- verb: establish or verify the usage of
Example: "This word is not attested until 1993"
- verb: provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
Example: "His high fever attested to his illness"
- verb: give testimony in a court of law
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