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• rubber stamp
  rubber stamp

  noun

  a device with a rubber printing surface that becomes coated with ink by being pressed on an ink-saturated pad, used for imprinting dates, addresses, standard designations or notices, etc., by hand.
• rubber-stamp
  rubber-stamp

  verb (used with object)

  to imprint with a rubber stamp.

rubber stamp

¹ American  

noun

1. a device with a rubber printing surface that becomes coated with ink by being pressed on an ink-saturated pad, used for imprinting dates, addresses, standard designations or notices, etc., by hand.

2. a person or government agency that gives approval automatically or routinely.

3. such approval.

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rubber-stamp ² American  

[ruhb-er-stamp] / ˈrʌb ərˈstæmp /

verb (used with object)

1. to imprint with a rubber stamp.

2. to give approval automatically or without consideration.

   to rubber-stamp the president's proposals.

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adjective

1. tending to give approval automatically or without due consideration.

   a rubber-stamp Congress that passed all the president's bills.

rubber stamp British  

noun

1. a device used for imprinting dates or commonly used phrases on forms, invoices, etc

2. automatic authorization of a payment, proposal, etc, without challenge

3. a person who makes such automatic authorizations; a cipher or person of little account

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verb

1. to imprint (forms, invoices, etc) with a rubber stamp

2. informal to approve automatically

rubber stamp Idioms  

1. A person or organization that automatically approves or endorses a policy without assessing its merit; also, such an approval or endorsement. For example, The nominating committee is merely a rubber stamp; they approve anyone the chairman names, or The dean gave his rubber stamp to the recommendations of the tenure committee. This metaphoric term alludes to the rubber printing device used to imprint the same words over and over. [Early 1900s]

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Etymology

Origin of rubber stamp¹

First recorded in 1885–90

Origin of rubber-stamp²

First recorded in 1915–20; v. use of rubber stamp

Example Sentences

Checks on Andrew's trips were given a "rubber stamp", he recalls, rather than any scrutiny.

From BBC • Feb. 23, 2026

Andrew Leung, the outgoing president of the legislature, did not agree that the institution had become a rubber stamp.

From Barron's • Nov. 3, 2025

Few translators, few resources, in the middle of nowhere, a court with a rubber stamp.

From Slate • Jun. 19, 2025

“It’s sort of a rubber stamp in most cases.”

From Los Angeles Times • Jan. 4, 2024

First there came mimeographed letters of commendation, then real letters signed by the Secretary of the Treasury, and not with a rubber stamp either.

From "East of Eden" by John Steinbeck