stamp as

stamp (someone or something) as (something)

To identify, label, or characterize someone or something as a certain type of person or thing. The other kids stamped him as an outsider the moment he joined their class. The opposition was quick to stamp the proposal as nothing more than partisan trickery. Following the war, people who had spoken against the regime were stamped as traitors and jailed.
See also: stamp
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

stamp someone or something as something

to label someone or something as something; to mark someone or something as something. His manner stamped him as a fool. The committee stamped the proposal as wasteful.
See also: stamp
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in classic literature ?
The door of the next car opened, and Colonel Proctor appeared on the platform, attended by a Yankee of his own stamp as his second.
Anthony on a suffrage stamp as well as the Byrd expedition to Antarctica.
The small Himalayan kingdom of Bhutan also created a stamp as a CD-Rom, which is called, "Harmony in Nature."
We should use the newly issued stamp as a tool to continue to educate people on Robeson's life, and on a part of U.S.