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authenticate

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Authenticate means to show or certify that something is not a copy of anything else. (verb)

An expert in antique vases who examines a vase to verify that it is not a replicate or fake is an example of an expert that will authenticate the vase.

See authenticate in Webster's New World College Dictionary

See authenticate in American Heritage Dictionary 4

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authenticate (synonyms)

authenticate (business)

authenticate (computer)

authenticate (legal)

authenticated